Webster Financial (WBS) 10-Q8 Aug 232023 Q2 Quarterly reportFinancial data

Company Profile

Cover Page

Cover Page - shares	6 Months Ended
Cover Page - shares	Jun. 30, 2023	Jul. 31, 2023
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2023
Document Transition Report	false
Entity File Number	001-31486
Entity Registrant Name	WEBSTER FINANCIAL CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	06-1187536
Entity Address, Address Line One	200 Elm Street
Entity Address, City or Town	Stamford
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06902
City Area Code	203
Local Phone Number	578-2202
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		173,254,930
Entity Central Index Key	0000801337
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2023
Common Class A
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	WBS
Security Exchange Name	NYSE
Series F Preferred Stock
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing 1/1000th interest in a share
Trading Symbol	WBS-PrF
Security Exchange Name	NYSE
Series G Preferred Stock
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing 1/40th interest in a share
Trading Symbol	WBS-PrG
Security Exchange Name	NYSE

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Assets:
Cash and due from banks	$ 283,623	$ 264,118
Interest-bearing deposits	1,077,136	575,825
Investment securities available-for-sale, at fair value	7,759,341	7,892,697
Investment securities held-to-maturity, net of allowance for credit losses of $216 and $182	6,943,784	6,564,697
Federal Home Loan Bank and Federal Reserve Bank stock	407,968	445,900
Loans held for sale ($1,800 and $1,991 valued under fair value option)	10,963	1,991
Loans and leases	51,626,048	49,764,426
Allowance for credit losses on loans and leases	(628,911)	(594,741)
Loans and leases, net	50,997,137	49,169,685
Deferred tax assets, net	377,588	371,634
Premises and equipment, net	426,310	430,184
Goodwill	2,631,465	2,514,104
Other intangible assets, net	220,652	199,342
Cash surrender value of life insurance policies	1,239,077	1,229,169
Accrued interest receivable and other assets	1,663,199	1,618,175
Total assets	74,038,243	71,277,521
Liabilities and stockholders' equity:
Non-interest-bearing	11,157,390	12,974,975
Interest-bearing	47,590,142	41,079,365
Total deposits	58,747,532	54,054,340
Securities sold under agreements to repurchase and other borrowings	243,580	1,151,830
Federal Home Loan Bank advances	4,310,371	5,460,552
Long-term debt	1,052,258	1,073,128
Accrued expenses and other liabilities	1,404,776	1,481,485
Total liabilities	65,758,517	63,221,335
Stockholders’ equity:
Common stock	1,828	1,828
Paid-in capital	6,150,713	6,173,240
Retained earnings	3,017,445	2,713,861
Treasury stock, at cost—9,517,081 and 8,770,472 shares	(455,416)	(431,762)
Accumulated other comprehensive (loss), net of tax	(718,823)	(684,960)
Total stockholders' equity	8,279,726	8,056,186
Total liabilities and stockholders' equity	74,038,243	71,277,521
Series F Preferred Stock
Stockholders’ equity:
Preferred stock	145,037	145,037
Series G Preferred Stock
Stockholders’ equity:
Preferred stock	$ 138,942	$ 138,942

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Allowance	$ 216	$ 182
Value under fair value options	1,800	1,991
Loans held for sale, valued under fair value option	$ 1,800	$ 1,991
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	3,000,000	3,000,000
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	400,000,000	400,000,000
Common stock, shares issued (in shares)	182,778,045
Treasury stock (in shares)	9,517,081	8,770,472
Series F Preferred Stock
Preferred stock, shares issued (in shares)	6,000	6,000
Preferred stock, shares outstanding (in shares)	6,000	6,000
Series G Preferred Stock
Preferred stock, shares issued (in shares)	135,000
Preferred stock, shares outstanding (in shares)	135,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Interest Income:
Interest and fees on loans and leases	$ 771,973	$ 431,538	$ 1,488,329	$ 777,814
Taxable interest and dividends on investments	147,467	69,538	248,339	123,262
Non-taxable interest on investment securities	13,535	12,664	27,219	22,466
Loans held for sale	421	7	437	33
Total interest income	933,396	513,747	1,764,324	923,575
Interest Expense:
Deposits	251,466	12,459	401,670	19,858
Securities sold under agreements to repurchase and other borrowings	63	2,677	7,890	3,634
Federal Home Loan Bank advances	88,556	3,164	156,682	3,220
Long-term debt	9,482	8,787	18,970	15,955
Total interest expense	349,567	27,087	585,212	42,667
Net interest income	583,829	486,660	1,179,112	880,908
Provision for credit losses	31,498	12,243	78,247	201,088
Net interest income after provision for credit losses	552,331	474,417	1,100,865	679,820
Non-interest Income:
Deposit service fees	45,418	51,385	90,854	99,212
Loan and lease related fees	20,528	27,907	43,533	50,586
Wealth and investment services	7,391	11,244	13,978	21,841
Mortgage banking activities	129	102	188	530
Cash surrender value of life insurance policies	6,293	8,244	13,021	14,976
(Loss) on sale of investment securities	(48)	0	(16,795)	0
Other income	9,663	22,051	15,361	37,823
Total non-interest income	89,374	120,933	160,140	224,968
Non-interest Expense:
Compensation and benefits	173,305	187,656	346,505	371,658
Occupancy	20,254	51,593	40,425	70,208
Technology and equipment	51,815	41,498	96,181	96,899
Intangible assets amortization	9,193	8,802	18,690	15,189
Marketing	5,160	3,441	8,636	6,950
Professional and outside services	29,385	15,332	61,819	69,423
Deposit insurance	13,723	6,748	26,046	11,970
Other expense	41,254	43,157	78,254	75,715
Total non-interest expense	344,089	358,227	676,556	718,012
Income before income taxes	297,616	237,123	584,449	186,776
Income tax expense	62,648	54,812	128,477	21,212
Net income	234,968	182,311	455,972	165,564
Less: Preferred stock dividends	4,162	4,163	8,325	7,594
Net income available to common stockholders	230,806	178,148	447,647	157,970
Earnings applicable to common stockholders	$ 230,806	$ 178,148	$ 447,647	$ 157,970
Earnings per common share:
Basic (in dollars per share)	$ 1.32	$ 1	$ 2.57	$ 0.97
Diluted (in dollars per share)	$ 1.32	$ 1	$ 2.57	$ 0.97

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 234,968	$ 182,311	$ 455,972	$ 165,564
Other comprehensive (loss) income, net of tax:
Investment securities available-for-sale	(85,037)	(205,273)	(13,419)	(450,152)
Derivative instruments	(47,523)	(308)	(26,149)	(8,152)
Defined benefit pension and other postretirement benefit plans	1,757	(28)	5,705	(448)
Other comprehensive (loss), net of tax	(130,803)	(205,609)	(33,863)	(458,752)
Comprehensive income (loss)	$ 104,165	$ (23,298)	$ 422,109	$ (293,188)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Series F Preferred Stock	Series G Preferred Stock	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings [Member] Series F Preferred Stock	Retained Earnings [Member] Series G Preferred Stock	Treasury Stock, Common	Accumulated Other Comprehensive Income (Loss), Net of Tax
Beginning Balance at Dec. 31, 2021	$ 3,438,325				$ 145,037	$ 937	$ 1,108,594	$ 2,333,288				$ (126,951)	$ (22,580)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	165,564							165,564
Other comprehensive (loss), net of tax	(458,752)												(458,752)
Common stock dividends and equivalents	(107,620)							(107,620)
Preferred stock dividends			$ (3,938)	$ (3,656)						$ (3,938)	$ (3,656)
Issued in business combination	5,180,124				138,942	891	5,040,291
Stock-based compensation	30,469						419					30,050
Exercise of stock options	497						(451)					948
Common shares acquired from stock compensation plan activity	(21,095)											(21,095)
Common stock repurchase program	(222,130)											(222,130)
Ending Balance at Jun. 30, 2022	7,997,788				283,979	1,828	6,148,853	2,383,638				(339,178)	(481,332)
Beginning Balance at Mar. 31, 2022	8,177,135				283,979	1,828	6,129,440	2,276,875				(239,264)	(275,723)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	182,311							182,311
Other comprehensive (loss), net of tax	(205,609)												(205,609)
Common stock dividends and equivalents	(71,386)							(71,386)
Preferred stock dividends			(1,969)	(2,193)						(1,969)	(2,193)
Stock-based compensation	21,466						19,517					1,949
Exercise of stock options	86						(104)					190
Common shares acquired from stock compensation plan activity	(2,128)											(2,128)
Common stock repurchase program	(99,925)											(99,925)
Ending Balance at Jun. 30, 2022	7,997,788				283,979	1,828	6,148,853	2,383,638				(339,178)	(481,332)
Beginning Balance at Dec. 31, 2022	$ 8,056,186	$ (4,245)			283,979	1,828	6,173,240	2,713,861	$ (4,245)			(431,762)	(684,960)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2022-02
Net income	$ 455,972							455,972
Other comprehensive (loss), net of tax	(33,863)												(33,863)
Common stock dividends and equivalents	(139,818)							(139,818)
Preferred stock dividends			(3,938)	(4,387)						(3,938)	(4,387)
Stock-based compensation	25,812						(20,501)					46,313
Exercise of stock options	1,723						(2,026)					3,749
Common shares acquired from stock compensation plan activity	(15,404)											(15,404)
Common stock repurchase program	(58,312)											(58,312)
Ending Balance at Jun. 30, 2023	8,279,726				283,979	1,828	6,150,713	3,017,445				(455,416)	(718,823)
Beginning Balance at Mar. 31, 2023	8,294,294				283,979	1,828	6,137,743	2,856,745				(397,981)	(588,020)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	234,968							234,968
Other comprehensive (loss), net of tax	(130,803)												(130,803)
Common stock dividends and equivalents	(70,106)							(70,106)
Preferred stock dividends			$ (1,969)	$ (2,193)						$ (1,969)	$ (2,193)
Stock-based compensation	14,166						12,970					1,196
Common shares acquired from stock compensation plan activity	(319)											(319)
Common stock repurchase program	(58,312)											(58,312)
Ending Balance at Jun. 30, 2023	$ 8,279,726				$ 283,979	$ 1,828	$ 6,150,713	$ 3,017,445				$ (455,416)	$ (718,823)

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Common stock dividends/equivalents (in dollars per share)	$ 0.40	$ 0.40	$ 0.80	$ 0.80
Series F Preferred Stock
Preferred stock dividends (in dollars per share)	328.125	328.125	656.25	656.25
Series G Preferred Stock
Preferred stock dividends (in dollars per share)	$ 16.25	$ 16.25	$ 32.50	$ 32.50

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022
Operating Activities:
Net income		$ 455,972	$ 165,564
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses		78,247	201,088
Deferred Income Tax Expense (Benefit)		434	(44,293)
Stock-based compensation		25,812	30,469
Depreciation and amortization of property and equipment and intangible assets		40,339	40,673
(Accretion) and amortization of interest-earning assets and borrowings		(10,924)	(25,429)
Amortization of low-income housing tax credit investments		36,295	26,449
Amortization of mortgage servicing assets		709	1,769
Reduction of right-of-use lease assets		15,340	39,865
Net (gain) on sale, net of write-downs, of foreclosed properties and repossessed assets		(799)	(418)
Loss on disposal of property and equipment		72	4,740
Loss on sale of investment securities		16,795	0
(Gain) on extinguishment of long-term debt		(698)	0
Originations of loans held for sale		(8,301)	(28,098)
Proceeds from sale of loans held for sale		8,660	32,833
Net (gain) on mortgage banking activities		(168)	(503)
Net (gain) on sale of loans not originated for sale		(745)	(3,173)
(Increase) in cash surrender value of life insurance policies		(13,021)	(14,976)
(Gain) from life insurance policies		(1,418)	(1,447)
Increase (Decrease) in Derivative Assets and Liabilities		22,238	336,819
Increase (Decrease) in Other Operating Assets		(132,297)	(57,705)
Increase (Decrease) in Other Accounts Payable and Accrued Liabilities		(68,880)	(65,422)
Net cash provided by operating activities		463,662	638,805
Investing Activities:
Purchases of available-for-sale securities		(569,053)	(1,099,810)
Proceeds from principal payments, maturities, and calls of available-for-sale securities		238,089	475,922
Proceeds from sale of available-for-sale securities		398,296	0
Purchases of held-to-maturity securities		(599,387)	(847,534)
Proceeds from principal payments, maturities, and calls of held-to-maturity securities		221,643	476,710
Net decrease (increase) in Federal Home Loan Bank and Federal Reserve Bank stock		37,932	(107,086)
Alternative investments (capital calls), net of distributions		(8,724)	(7,184)
Net (increase) in loans		(2,316,751)	(2,815,067)
Proceeds from sale of loans not originated for sale		441,129	118,505
Proceeds from sale of foreclosed properties and repossessed assets		2,755	1,290
Additions to property and equipment		(19,661)	(9,895)
Proceeds from life insurance policies		0	11,576
Net cash received in merger with Sterling		0	513,960
Net cash (used for) investing activities		(2,331,378)	(3,343,020)
Financing Activities:
Net increase (decrease) in deposits		4,683,761	(41,467)
Proceeds from Federal Home Loan Bank advances		15,450,000	5,150,000
Repayments of Federal Home Loan Bank advances		(16,600,181)	(2,650,187)
Net (decrease) increase in securities sold under agreements to repurchase and other borrowings		(908,250)	1,041,702
Repayment of long-term debt		(16,752)	0
Dividends paid to common stockholders		(140,040)	(107,469)
Dividends paid to preferred stockholders		(8,325)	(5,401)
Exercise of stock options		1,723	497
Common stock repurchase program		(58,000)	(222,130)
Common shares acquired related to stock compensation plan activity		(15,404)	(21,095)
Net cash provided by financing activities		2,388,532	3,144,450
Net increase in cash and cash equivalents		520,816	440,235
Cash and cash equivalents at beginning of period		839,943	461,570
Cash and cash equivalents at end of period		1,360,759	901,805
Supplemental disclosure of cash flow information:
Interest paid		544,704	49,544
Income taxes paid		140,692	66,064
Non-cash investing and financing activities:
Transfer of loans and leases to foreclosed properties and repossessed assets		2,958	575
Transfer of loans and leases to loans held-for-sale		449,673	91,815
Sterling
Non-cash investing and financing activities:
Tangible assets acquired	[1]	17,607	26,919,975
Goodwill and other intangible assets	[1]	(25,561)	2,149,532
Common stock issued	[1]	0	5,041,182
Liabilities assumed	[1]	(7,954)	(24,403,343)
Sterling \| Preferred Stock [Member]
Non-cash investing and financing activities:
Preferred stock exchanged	[1]	0	138,942
Bend Financial, Inc.
Investing Activities:
Net cash paid for acquisition of Bend		0	(54,407)
Non-cash investing and financing activities:
Tangible assets acquired	[1]	294	15,731
Goodwill and other intangible assets	[1]	(294)	38,966
Liabilities assumed	[1]	0	(290)
interLINK
Investing Activities:
Net cash paid for acquisition of Bend		(157,646)	0
Non-cash investing and financing activities:
Tangible assets acquired		6,417	0
Goodwill and other intangible assets		183,216	0
Liabilities assumed		(15,948)	0
Contingent consideration		$ 16,039	$ 0

[1]The non-cash merger and acquisition activities presented for 2023 reflect adjustments recorded within the one-year measurement period, which were identified as a result of extended information gathering and new information that arose from integration activities during the first quarter of 2023. Additional information regarding these amounts can be found within Note 2: Mergers and Acquisitions and Note 6: Goodwill and Other Intangible Assets.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
Summary of Significant Accounting Policies	Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Nature of Operations Webster Financial Corporation is a bank holding company and financial holding company under the BHC Act, incorporated under the laws of Delaware in 1986, and headquartered in Stamford, Connecticut. Webster Bank, along with its HSA Bank division, is a leading commercial bank in the Northeast that delivers a wide range of digital and traditional financial solutions to businesses, individuals, families, and partners across its three differentiated lines of business: Commercial Banking, HSA Bank, and Consumer Banking. While its core footprint spans from New York to Rhode Island and Massachusetts, certain businesses operate in extended geographies. HSA Bank is one of the largest providers of employee benefit solutions in the United States. Basis of Presentation The unaudited Condensed Consolidated Financial Statements of the Company have been prepared in accordance with GAAP for interim financial information and Article 10 of Regulation S-X. Certain information and footnote disclosures required by GAAP for complete financial statements have been omitted or condensed. Therefore, the condensed consolidated financial statements should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 31, 2022. The results of operations for the six months ended June 30, 2023, are not necessarily indicative of the future results that may be attained for the entire year or other interim periods. In the opinion of management, all necessary adjustments have been reflected to present fairly the financial position, results of operations, and cash flows for the reporting periods presented. Intercompany transactions and balances have been eliminated in consolidation. Assets under administration or assets under management that the Company holds or manages in a fiduciary or agency capacity for customers are not included in the Condensed Consolidated Financial Statements. Use of Estimates The preparation of the Condensed Consolidated Financial Statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the Condensed Consolidated Financial Statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Accounting Standards Adopted in the Current Period ASU No. 2022-02—Financial Instruments—Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures In March 2022, the FASB issued ASU No. 2022-02, which eliminates the accounting guidance for TDRs by creditors in Subtopic 310-40, Receivables—Troubled Debt Restructurings by Creditors, while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty. Specifically, rather than applying the recognition and measurement guidance for TDRs, an entity must apply the loan refinancing and restructuring guidance in paragraphs 310-20-35-9 through 35-11 to determine whether a modification results in a new loan or a continuation of an existing loan. In addition, the Update requires that an entity disclose current-period gross write-offs by year of origination for financing receivables and net investments in leases within the scope of Subtopic 326-20, Financial Instruments—Credit Losses—Measured at Amortized Cost in the vintage disclosures required by paragraph 326-20-50-6. Modifications to borrowers experiencing financial difficulty include principal forgiveness, interest rate reductions, payment delays, term extensions, or combinations thereof. Expected losses or recoveries on loans where modifications have been granted to borrowers experiencing financial difficulty have been factored into the ACL on loans and leases. Upon adoption of ASU 2022-02, the Company is no longer required to use a discounted cash flow (or reconcilable) method to measure the ACL resulting from a modification with a borrower experiencing financial difficulty. Accordingly, the Company now applies the same credit loss methodology it uses for similar loans that were not modified. The Company adopted the Update on January 1, 2023. The Company elected the option to apply the modified retrospective transition method related to the recognition and measurement of TDRs, which resulted in a $5.9 million increase to the Allowance for Credit Losses on Loans and Leases and a $1.7 million decrease to Deferred Tax Assets, net, with a corresponding $4.2 million cumulative-effect adjustment to retained earnings as of the adoption date. The enhanced disclosure requirements provided for by the Update were adopted on a prospective basis. Reporting periods prior to the adoption of the Update are accounted for and presented in accordance with the applicable GAAP. Refer to Note 4: Loans and Leases for additional information regarding modifications granted to borrowers experiencing financial difficulty. ASU No. 2022-01—Derivatives and Hedging (Topic 815): Fair Value Hedging—Portfolio Layer Method In March 2022, the FASB issued ASU No. 2022-01—Derivatives and Hedging (Topic 815): Fair Value Hedging—Portfolio Layer Method, which expands the current last-of-layer method of hedge accounting that permits only one hedged layer to allow multiple hedged layers of a single closed portfolio. To reflect that expansion, the last-of-layer method is renamed the portfolio layer method. Additionally, the amendments in this Update: (i) expand the scope of the portfolio layer method to include non-prepayable assets; (ii) specify eligible hedging instruments in a single-layer hedge; (iii) provide additional guidance on the accounting for and disclosure of hedge basis adjustments; and (iv) specify how hedge basis adjustments should be considered when determining credit losses for the assets included in the closed portfolio. An entity may also reclassify debt securities classified in the held-to-maturity category at the date of adoption to the available-for-sale category only if the entity applies portfolio layer method hedging to one or more closed portfolios that include those debt securities within a 30-day period. The Company adopted the Update on January 1, 2023 on a prospective basis. The adoption of this guidance did not have a material impact on the Company's Consolidated Financial Statements. The entity did not reclassify any debt securities from the held-to-maturity category to the available-for-sale category as permitted upon adoption. ASU No. 2021-08—Business Combinations (Topic 805)—Accounting for Contract Assets and Contract Liabilities from Contracts with Customers In October 2021, the FASB issued ASU No. 2021-08—Business Combinations (Topic 805)—Accounting for Contract Assets and Contract Liabilities from Contracts with Customers, which requires that an acquirer recognize and measure contract assets and contract liabilities acquired in a business combination in accordance with Topic 606, Revenue from Contracts with Customers. At the acquisition date, an acquirer should account for the related revenue contracts in accordance with Topic 606 as if it had originated the contracts. The Company adopted the Update on January 1, 2023 on a prospective basis. The adoption of this guidance did not have a material impact on the Company's Consolidated Financial Statements. Relevant Accounting Standards Issued But Not Yet Adopted ASU No. 2023-02—Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method (a consensus of the Emerging Issues Task Force) In March 2023, the FASB issued ASU No. 2023-02—Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method (a consensus of the Emerging Issues Task Force), which permits reporting entities to elect to account for their tax equity investments, regardless of the program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. A reporting entity may make an accounting policy election to apply the proportional amortization method in accordance with paragraph 323-740-25-4 on a tax-credit-program-by-tax-credit-program basis rather than electing to apply the proportional amortization method at the reporting entity level or to individual investments. A reporting entity that applies the proportional amortization method to qualifying tax equity investments must account for the receipt of the investment tax credits using the flow-through method under Topic 740, Income Taxes, even if the entity applies the deferral method for other investment tax credit received. The amendments also remove certain guidance for Qualified Affordable Housing Project Investments, require the application of the delayed equity contribution guidance to all tax equity investments, and require specific disclosures that must be applied to all investments that generate income tax credits and other income tax benefits from a tax credit program for which the entity has elected to apply the proportional amortization method in accordance with Subtopic 323-740. The Update is effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years, with early adoption permitted. The amendments generally must be applied on either a modified retrospective or retrospective basis with a cumulative-effect adjustment to retained earnings reflecting the difference between the previous method used to account for the tax equity investment and the application of the proportional amortization method since the investment was entered into. The adoption of this guidance is not expected to have a material impact on the Consolidated Financial Statements as the Company's investments in tax credit structures are currently limited to LIHTC investments, which are already being accounted for using the proportional amortization method. ASU No. 2023-01—Leases (Topic 842): Common Control Arrangements In March 2023, the FASB issued ASU No. 2023-01—Leases (Topic 842): Common Control Arrangements, which requires that leasehold improvements associated with leases between entities under common control be: (i) amortized by the lessee over the useful live of the leasehold improvements to the common control group (regardless of the lease term) as long as the lessee controls the use of the underlying asset (the leased asset) through a lease; however, if the lessor obtained the right to control the use of the underlying asset through a lease with another entity not within the same common control group, the amortization period may not exceed the amortization period of the common control group; and (ii) accounted for as a transfer between entities under common control through an adjustment to equity, if, and when, the lessee no longer controls the use of the underlying asset. Additionally, those leasehold improvements are subject to the impairment guidance in Topic 360, Property, Plant, and Equipment. The Update is effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years, with early adoption permitted. The amendments either may be applied prospectively to all new and existing leasehold improvements recognized on or after the adoption date with any remaining unamortized balance of existing leasehold improvements amortized over their remaining useful life to the common control group determined at that date; or retrospectively to the beginning of the period in which the entity first applied Topic 842, with any leasehold improvements that otherwise would not have been amortized or impaired recognized through a cumulative-effect adjustment to the opening balance of retained earnings at the beginning of the earliest period presented in accordance with Topic 842. The Company is in the early assessment stages of evaluating the amendments and the impact of adoption on its Consolidated Financial Statements. ASU No. 2022-03—Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions In June 2022, the FASB issued ASU No. 2022-03—Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions, which clarifies that a contractual restriction on the sale of an equity security is not considered part of the unit of account of the equity security, and therefore, is not considered in measuring fair value. The amendments also clarify that an entity cannot, as a separate unit of account, recognize and measure a contractual sale restriction, and requires the following disclosures for equity securities subject to contractual sale restrictions: (i) the fair value of equity securities subject to contractual sale restrictions reflected on the balance sheet; (ii) the nature and remaining duration of the restriction(s); and (iii) the circumstances that could cause a lapse in the restriction(s). The Update is effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years, with early adoption permitted. For all entities except investment companies, the amendments should be applied prospectively with any adjustments from the adoption of the amendments recognized in earnings and disclosed on the date of adoption. The adoption of this guidance is not expected to have a material impact on the Consolidated Financial Statements and disclosures. The Company does not currently consider contractual restrictions on the sale of an equity security in measuring fair value.

Mergers and Acquisitions

Mergers and Acquisitions	6 Months Ended
Mergers and Acquisitions	Jun. 30, 2023
Business Combination and Asset Acquisition [Abstract]
Mergers and Acquisitions	Mergers and Acquisitions interLINK Acquisition On January 11, 2023, Webster acquired 100% ownership of interLINK from StoneCastle Partners LLC. interLINK is a technology-enabled deposit management platform that administers over $9 billion of deposits from FDIC-insured cash sweep programs between banks and broker/dealers and clearing firms. The acquisition provides the Company with access to a unique source of core deposit funding and scalable liquidity and adds another technology-enabled channel to its already differentiated, omnichannel deposit gathering capabilities. The total purchase price of the acquisition was $174.6 million, which included cash paid of $158.6 million and $16.0 million of contingent consideration measured at fair value. The contingent consideration is payable in cash upon the achievement of discrete customer and deposit growth events within three years of the acquisition date. Additional information regarding the determination of fair value for contingent consideration liabilities can be found within Note 14: Fair Value Measurements. The transaction has been accounted for as a business combination, and resulted in the addition of $31.4 million in net assets measured at fair value, which primarily comprised $36.0 million of broker dealer relationship intangible assets, $6.0 million of developed technology, a $4.0 million non-competition agreement intangible asset, and $15.9 million of royalty liabilities. The $143.2 million of goodwill recognized is deductible for tax purposes. The Company's valuations of the assets acquired and liabilities assumed in the interLINK acquisition were considered final as of June 30, 2023. Bend Financial, Inc. Acquisition On February 18, 2022, Webster acquired 100% of the equity interests of Bend, a cloud-based platform solution provider for HSAs, in exchange for cash of $55.3 million. The transaction was accounted for as a business combination, and resulted in the addition of $19.6 million in net assets measured at fair value, which primarily comprised $15.9 million of internal use software and a $3.0 million customer relationship intangible asset. The Company's valuations of the assets acquired and liabilities assumed in the Bend acquisition were considered final as of March 31, 2023. Merger with Sterling Bancorp On January 31, 2022, Webster completed its merger with Sterling. The transaction was accounted for as a business combination. Accordingly, the purchase price was allocated to the assets acquired and liabilities assumed based on their fair values as of the merger effective date. The determination of fair value requires management to make estimates about discount rates, future expected cash flows, market conditions, and other future events that are highly subjective in nature and are subject to change. Fair value estimates of the assets acquired and liabilities assumed were subject to adjustment during the one-year measurement period following the closing of the merger if new information was obtained about facts and circumstances that existed as of the merger effective date that, if known, would have affected the measurement of the amounts recognized as of that date. Measurement period adjustments made during the first quarter of 2023 totaled a net $25.6 million, which pertained to other assets and other liabilities and their related deferred tax impact. The Company's valuations of the assets acquired and liabilities assumed in the merger with Sterling were considered final as of March 31, 2023. The following table summarizes the allocation of the purchase price to the fair value of the identifiable assets acquired and liabilities assumed from Sterling as of January 31, 2022: (In thousands) Unpaid Principal Balance Fair Value Purchase price consideration $ 5,180,300 Assets: Cash and due from banks 510,929 Interest-bearing deposits 3,207 Investment securities available-for-sale 4,429,948 Federal Home Loan Bank and Federal Reserve Bank Stock 150,502 Loans held for sale 23,517 Loans and leases: Commercial non-mortgage $ 5,570,782 5,527,657 Asset-based 694,137 683,958 Commercial real estate 6,790,600 6,656,405 Multi-family 4,303,381 4,255,906 Equipment financing 1,350,579 1,314,311 Warehouse lending 647,767 643,754 Residential 1,313,785 1,281,637 Home equity 132,758 122,553 Other consumer 12,559 12,525 Total loans and leases $ 20,816,348 20,498,706 Deferred tax assets, net (59,716) Premises and equipment 264,421 Other intangible assets 210,100 Bank-owned life insurance policies 645,510 Accrued interest receivable and other assets 986,729 Total assets acquired $ 27,663,853 Liabilities: Non-interest-bearing deposits $ 6,620,248 Interest-bearing deposits 16,643,755 Securities sold under agreements to repurchase and other borrowings 27,184 Long-term debt 516,881 Accrued expenses and other liabilities 589,689 Total liabilities assumed $ 24,397,757 Net assets acquired 3,266,096 Goodwill $ 1,914,204 In connection with the merger with Sterling, the Company recorded $1.9 billion of goodwill, which represents the excess of the purchase price over the fair value of the net assets acquired. Information regarding the allocation of goodwill to the Company's reportable segments can be found within Note 16: Segment Reporting. For a description of the valuation methodologies used to estimate the fair values of the significant assets acquired and liabilities assumed, refer to Note 2: Mergers and Acquisitions of the Company's Annual Report on Form 10-K for the year ended December 31, 2022. Merger-Related Expenses and Exit Activities The following table summarizes total merger-related expenses, which were primarily incurred in connection with the merger with Sterling: Three months ended June 30, Six months ended June 30, (In thousands) 2023 2022 2023 2022 Compensation and benefits (1) $ 6,675 $ 24,117 $ 17,787 $ 65,702 Occupancy (2) 495 30,999 1,230 31,355 Technology and equipment (3) 6,837 812 5,128 19,897 Professional and outside services (4) 18,939 3,824 38,948 48,281 Marketing 826 84 961 135 Other expense (5) 7,068 6,804 6,159 9,765 Total merger-related expenses $ 40,840 $ 66,640 $ 70,213 $ 175,135 (1) Comprised primarily of severance and employee retention costs, and executive synergy stock awards. (2) Comprised primarily of charges associated with the Company's corporate real estate consolidation plan in 2022. (3) Comprised primarily of technology contract termination costs, and charges to support core conversion activities in 2023. (4) Comprised primarily of advisory, accounting, and other professional fees, and charges to support core conversion activities in 2023. The amount for the six months ended June 30, 2023, includes a reduction of $1.7 million to a previously recorded contract termination charge during the three months ended March 31, 2023, due to a decrease in volume usage. (5) Comprised primarily of contract termination costs, disposals on property and equipment, and other miscellaneous expenses. The following tables summarize the change in accrued expenses and other liabilities as it relates to severance and contract termination costs, which were primarily incurred in connection with the merger with Sterling: Three months ended June 30, 2023 2022 (In thousands) Severance Contract Termination Total Severance Contract Termination Total Balance, beginning of period $ 5,961 $ 23,775 $ 29,736 $ 32,156 $ 17,704 $ 49,860 Additions charged to expense 1,988 — 1,988 7,808 — 7,808 Cash payments (4,545) — (4,545) (15,029) — (15,029) Other (235) — (235) (421) — (421) Balance, end of period $ 3,169 $ 23,775 $ 26,944 $ 24,514 $ 17,704 $ 42,218 Six months ended June 30, 2023 2022 (In thousands) Severance Contract Termination Total Severance (1) Contract Termination Total Balance, beginning of period $ 7,583 $ 30,362 $ 37,945 $ 10,835 $ — $ 10,835 Additions charged to expense 8,184 — 8,184 34,779 17,704 52,483 Cash payments (11,538) — (11,538) (16,795) — (16,795) Other (1,060) (6,587) (7,647) (4,305) — (4,305) Balance, end of period $ 3,169 $ 23,775 $ 26,944 $ 24,514 $ 17,704 $ 42,218

Investment Securities

Investment Securities	6 Months Ended
Investment Securities	Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities Available-for-Sale The following tables summarize the amortized cost and fair value of available-for-sale securities by major type: At June 30, 2023 (In thousands) Amortized Cost (1) Unrealized Unrealized Fair Value U.S. Treasury notes $ 407,555 $ — $ (23,488) $ 384,067 Government agency debentures 302,115 — (41,014) 261,101 Municipal bonds and notes 1,678,826 5 (74,681) 1,604,150 Agency CMO 58,529 — (5,169) 53,360 Agency MBS 2,476,218 9 (291,320) 2,184,907 Agency CMBS 2,041,431 44 (306,553) 1,734,922 CMBS 907,602 — (31,483) 876,119 Corporate debt 712,726 — (103,967) 608,759 Private label MBS 47,485 — (4,435) 43,050 Other 9,817 — (911) 8,906 Total available-for-sale securities $ 8,642,304 $ 58 $ (883,021) $ 7,759,341 At December 31, 2022 (In thousands) Amortized Cost (1) Unrealized Unrealized Fair Value U.S. Treasury notes $ 755,968 $ — $ (38,928) $ 717,040 Government agency debentures 302,018 — (43,644) 258,374 Municipal bonds and notes 1,719,110 5 (85,913) 1,633,202 Agency CMO 64,984 — (5,019) 59,965 Agency MBS 2,461,337 26 (303,339) 2,158,024 Agency CMBS 1,664,600 — (258,114) 1,406,486 CMBS 929,588 — (32,948) 896,640 CLO 2,108 — (1) 2,107 Corporate debt 795,999 — (91,587) 704,412 Private label MBS 48,895 — (4,646) 44,249 Other 12,548 — (350) 12,198 Total available-for-sale securities $ 8,757,155 $ 31 $ (864,489) $ 7,892,697 (1) Accrued interest receivable on available-for-sale securities of $37.1 million and $36.9 million at June 30, 2023, and December 31, 2022, respectively, is excluded from amortized cost and is included in Accrued interest receivable and other assets on the accompanying Condensed Consolidated Balance Sheets. Unrealized Losses The following tables summarize the gross unrealized losses and fair value of available-for-sale securities by length of time each major security type has been in a continuous unrealized loss position: At June 30, 2023 Less Than 12 Months 12 Months or More Total (Dollars in thousands) Fair Unrealized Fair Unrealized Number of Fair Unrealized U.S. Treasury notes $ — $ — $ 384,067 $ (23,488) 14 $ 384,067 $ (23,488) Government agency debentures 32,481 (2,376) 228,620 (38,638) 19 261,101 (41,014) Municipal bonds and notes 30,722 (506) 1,554,918 (74,175) 420 1,585,640 (74,681) Agency CMO 7,018 (349) 46,342 (4,820) 37 53,360 (5,169) Agency MBS 197,989 (4,220) 1,986,029 (287,100) 465 2,184,018 (291,320) Agency CMBS 345,784 (10,832) 1,347,550 (295,721) 142 1,693,334 (306,553) CMBS 48,536 (1,439) 827,583 (30,044) 51 876,119 (31,483) Corporate debt 8,805 (1,297) 599,954 (102,670) 92 608,759 (103,967) Private label MBS 11,880 (1,153) 31,170 (3,282) 3 43,050 (4,435) Other 4,789 (211) 4,117 (700) 2 8,906 (911) Total $ 688,004 $ (22,383) $ 7,010,350 $ (860,638) 1,245 $ 7,698,354 $ (883,021) At December 31, 2022 Less Than Twelve Months Twelve Months or Longer Total (Dollars in thousands) Fair Unrealized Fair Unrealized Number of Fair Unrealized U.S. Treasury notes $ 337,563 $ (19,167) $ 379,477 $ (19,761) 23 $ 717,040 $ (38,928) Government agency debentures 258,374 (43,644) — — 19 258,374 (43,644) Municipal bonds and notes 1,616,771 (85,913) — — 444 1,616,771 (85,913) Agency CMO 55,693 (4,640) 4,272 (379) 39 59,965 (5,019) Agency MBS 1,641,544 (206,412) 515,206 (96,927) 460 2,156,750 (303,339) Agency CMBS 485,333 (68,674) 921,153 (189,440) 132 1,406,486 (258,114) CMBS 273,150 (8,982) 598,490 (23,966) 52 871,640 (32,948) CLO — — 2,107 (1) 1 2,107 (1) Corporate debt 692,990 (89,692) 8,421 (1,895) 105 701,411 (91,587) Private label MBS 44,249 (4,646) — — 3 44,249 (4,646) Other 12,198 (350) — — 4 12,198 (350) Total $ 5,417,865 $ (532,120) $ 2,429,126 $ (332,369) 1,282 $ 7,846,991 $ (864,489) The $18.5 million increase in gross unrealized losses from December 31, 2022, to June 30, 2023, is primarily due to higher market rates. The Company assesses each available-for-sale security that is in an unrealized loss position to determine whether the decline in fair value below the amortized cost basis is a result from a credit loss or other factors. At both June 30, 2023, and December 31, 2022, no ACL was recorded on available-for-sale securities as each of the securities in the Company's portfolio are investment grade, current as to principal and interest, and their price changes are consistent with interest and credit spreads when adjusting for convexity, rating, and industry differences. At June 30, 2023, based on current market conditions and the Company's current targeted balance sheet composition strategy, the Company intends to hold its available-for-sale securities with unrealized loss positions through the anticipated recovery period, and it is more-likely-than-not that the Company will not have to sell these available-for-sale securities before the recovery of the entire amortized cost basis. The issuers of these available-for-sale securities have not, to the Company’s knowledge, established any cause for default. Market prices are expected to approach par as the securities approach maturity. Contractual Maturities The following table summarizes the amortized cost and fair value of available-for-sale securities by contractual maturity: At June 30, 2023 (In thousands) Amortized Cost Fair Value Maturing within 1 year $ 33,337 $ 33,164 After 1 year through 5 years 1,040,297 978,096 After 5 through 10 years 1,401,731 1,277,563 After 10 years 6,166,939 5,470,518 Total available-for-sale securities $ 8,642,304 $ 7,759,341 Available-for-sale securities that are not due at a single maturity date have been categorized based on the maturity date of the underlying collateral. Actual principal cash flows may differ from this categorization as borrowers have the right to repay their obligations with or without prepayment penalties. Sales of Available-for Sale Securities During the three and six months ended June 30, 2023, the Company sold U.S. Treasury notes, Corporate debt securities, and Municipal bonds and notes classified as available-for-sale for proceeds of $2.9 million and $398.3 million, respectively, which resulted in gross realized losses of $48 thousand and $20.5 million, respectively. Because $3.8 million of the total loss recognized for the six months ended June 30, 2023, was attributed to a decline in credit quality, those portions of the charges have been included in the Provision for credit losses on the accompanying Condensed Consolidated Statements of Income. There were no sales of available-for-sale securities during the three and six months ended June 30, 2022. Other Information The following table summarizes the carrying value of available-for-sale securities pledged for deposits, borrowings, and other purposes: (In thousands) At June 30, 2023 At December 31, 2022 Pledged for deposits $ 2,251,240 $ 2,573,072 Pledged for borrowings and other 4,211,733 1,195,101 Total available-for-sale securities pledged $ 6,462,973 $ 3,768,173 At June 30, 2023, the Company had callable available-for-sale securities with an aggregate carrying value of $2.6 billion. Held-to-Maturity The following tables summarize the amortized cost, fair value, and ACL on held-to-maturity securities by major type: At June 30, 2023 (In thousands) Amortized Cost (1) Unrealized Unrealized Fair Value Allowance Net Carrying Value Agency CMO $ 25,791 $ — $ (2,133) $ 23,658 $ — $ 25,791 Agency MBS 2,541,384 524 (325,432) 2,216,476 — 2,541,384 Agency CMBS 3,353,205 — (505,510) 2,847,695 — 3,353,205 Municipal bonds and notes 919,112 798 (36,263) 883,647 216 918,896 CMBS 104,508 — (9,302) 95,206 — 104,508 Total held-to-maturity securities $ 6,944,000 $ 1,322 $ (878,640) $ 6,066,682 $ 216 $ 6,943,784 At December 31, 2022 (In thousands) Amortized Cost (1) Unrealized Unrealized Fair Value Allowance Net Carrying Value Agency CMO $ 28,358 $ — $ (2,060) $ 26,298 $ — $ 28,358 Agency MBS 2,626,114 827 (339,592) 2,287,349 — 2,626,114 Agency CMBS 2,831,949 845 (407,648) 2,425,146 — 2,831,949 Municipal bonds and notes 928,845 1,098 (47,183) 882,760 182 928,663 CMBS 149,613 — (9,713) 139,900 — 149,613 Total held-to-maturity securities $ 6,564,879 $ 2,770 $ (806,196) $ 5,761,453 $ 182 $ 6,564,697 (1) Accrued interest receivable on held-to-maturity securities of $24.5 million and $24.2 million at June 30, 2023, and December 31, 2022, respectively, is excluded from amortized cost and is included in Accrued interest receivable and other assets on the accompanying Condensed Consolidated Balance Sheets. An ACL on held-to-maturity securities is recorded for certain Municipal bonds and notes to account for expected lifetime credit losses. Agency securities represent obligations issued by a U.S. government-sponsored enterprise or other federally-related entity and are either explicitly or implicitly guaranteed and therefore, assumed to be zero loss. Held-to-maturity securities with gross unrealized losses and no ACL are considered to be high credit quality, and therefore, zero credit loss has been recorded. The following table summarizes the activity in the ACL on held-to-maturity securities: Three months ended June 30, Six months ended June 30, (In thousands) 2023 2022 2023 2022 Balance, beginning of period $ 282 $ 204 $ 182 $ 214 (Benefit) provision for credit losses (66) 6 34 (4) Balance, end of period $ 216 $ 210 $ 216 $ 210 Contractual Maturities The following table summarizes the amortized cost and fair value of held-to-maturity securities by contractual maturity: At June 30, 2023 (In thousands) Amortized Cost Fair Value Maturing within 1 year $ 4,341 $ 4,340 After 1 year through 5 years 55,954 56,141 After 5 through 10 years 344,666 326,276 After 10 years 6,539,039 5,679,925 Total held-to-maturity securities $ 6,944,000 $ 6,066,682 Held-to-maturity securities that are not due at a single maturity date have been categorized based on the maturity date of the underlying collateral. Actual principal cash flows may differ from this categorization as borrowers have the right to prepay their obligations with or without prepayment penalties. Credit Quality Information The Company monitors the credit quality of held-to-maturity securities through credit ratings provided by Standard & Poor's Rating Services, Moody's Investor Services, Fitch Ratings, Inc., Kroll Bond Rating Agency, or DBRS Inc. Credit ratings express opinions about the credit quality of a security, and are updated at each quarter end. Investment grade securities are rated BBB- or higher by S&P, or Baa3 or higher by Moody's, and are generally considered by the rating agencies and market participants to be of low credit risk. Conversely, securities rated below investment grade, which are labeled as speculative grade by the rating agencies, are considered to have distinctively higher credit risk than investment grade securities. There were no speculative grade held-to-maturity securities at June 30, 2023, or December 31, 2022. Held-to-maturity securities that are not rated are collateralized with U.S. Treasury obligations. The following tables summarize the amortized cost of held-to-maturity securities based on their lowest publicly available credit rating: June 30, 2023 Investment Grade (In thousands) Aaa Aa1 Aa2 Aa3 A1 A2 A3 Not Rated Agency CMO $ — $ 25,791 $ — $ — $ — $ — $ — $ — Agency MBS — 2,541,384 — — — — — — Agency CMBS — 3,353,205 — — — — — — Municipal bonds and notes 334,490 162,966 254,457 116,030 32,949 — 4,165 14,055 CMBS 104,508 — — — — — — — Total held-to-maturity securities $ 438,998 $ 6,083,346 $ 254,457 $ 116,030 $ 32,949 $ — $ 4,165 $ 14,055 December 31, 2022 Investment Grade (In thousands) Aaa Aa1 Aa2 Aa3 A1 A2 A3 Not Rated Agency CMO $ — $ 28,358 $ — $ — $ — $ — $ — $ — Agency MBS — 2,626,114 — — — — — — Agency CMBS — 2,831,949 — — — — — — Municipal bonds and notes 336,035 163,312 255,235 116,870 38,177 4,165 — 15,051 CMBS 149,613 — — — — — — — Total held-to-maturity securities $ 485,648 $ 5,649,733 $ 255,235 $ 116,870 $ 38,177 $ 4,165 $ — $ 15,051 At June 30, 2023, and December 31, 2022, there were no held-to-maturity securities past due under the terms of their agreements nor in non-accrual status. Other Information The following table summarizes the carrying value of held-to-maturity securities pledged for deposits, borrowings, and other purposes: (In thousands) At June 30, 2023 At December 31, 2022 Pledged for deposits $ 1,259,307 $ 1,596,777 Pledged for borrowings and other 5,080,928 260,735 Total held-to-maturity securities pledged $ 6,340,235 $ 1,857,512 At June 30, 2023, the Company had callable held-to-maturity securities with an aggregate carrying value of $0.9 billion.

Loans and Leases

Loans and Leases	6 Months Ended
Loans and Leases	Jun. 30, 2023
Loans and Leases Receivable Disclosure [Abstract]
Loans and Leases	Loans and Leases The following table summarizes loans and leases by portfolio segment and class: (In thousands) At June 30, At December 31, 2022 Commercial non-mortgage $ 17,255,036 $ 16,392,795 Asset-based 1,718,251 1,821,642 Commercial real estate 13,542,251 12,997,163 Multi-family 7,118,820 6,621,982 Equipment financing 1,535,564 1,628,393 Warehouse lending 708,560 641,976 Commercial portfolio 41,878,482 40,103,951 Residential 8,140,182 7,963,420 Home equity 1,552,850 1,633,107 Other consumer 54,534 63,948 Consumer portfolio 9,747,566 9,660,475 Loans and leases $ 51,626,048 $ 49,764,426 The carrying amount of loans and leases at June 30, 2023, and December 31, 2022, includes net unamortized Non-Accrual and Past Due Loans and Leases The following tables summarize the aging of accrual and non-accrual loans and leases by class: At June 30, 2023 (In thousands) 30-59 Days 60-89 Days 90 or More Days Past Due Non-accrual Total Past Due and Non-accrual Current (1) Total Loans Commercial non-mortgage $ 2,550 $ 24,664 $ — $ 95,332 $ 122,546 $ 17,132,490 $ 17,255,036 Asset-based — — — 9,428 9,428 1,708,823 1,718,251 Commercial real estate 750 249 — 40,272 41,271 13,500,980 13,542,251 Multi-family 1,023 — — 5,823 6,846 7,111,974 7,118,820 Equipment financing 3,459 1,368 28 11,353 16,208 1,519,356 1,535,564 Warehouse lending — — — — — 708,560 708,560 Commercial portfolio 7,782 26,281 28 162,208 196,299 41,682,183 41,878,482 Residential 8,596 1,918 — 26,750 37,264 8,102,918 8,140,182 Home equity 3,305 2,926 — 26,213 32,444 1,520,406 1,552,850 Other consumer 406 104 1 72 583 53,951 54,534 Consumer portfolio 12,307 4,948 1 53,035 70,291 9,677,275 9,747,566 Total $ 20,089 $ 31,229 $ 29 $ 215,243 $ 266,590 $ 51,359,458 $ 51,626,048 (1) At June 30, 2023, there were $22.6 million of commercial loans that had either reached their contractual maturity or experienced administrative delays. These loans are classified as current in the table above. In July 2023, $19.0 million were resolved. At December 31, 2022 (In thousands) 30-59 Days 60-89 Days 90 or More Days Past Due Non-accrual Total Past Due and Non-accrual Current Total Loans Commercial non-mortgage $ 8,434 $ 821 $ 645 $ 71,884 $ 81,784 $ 16,311,011 $ 16,392,795 Asset-based 5,921 — — 20,024 25,945 1,795,697 1,821,642 Commercial real estate 1,494 23,492 68 39,057 64,111 12,933,052 12,997,163 Multi-family 1,157 — — 636 1,793 6,620,189 6,621,982 Equipment financing 806 9,988 — 12,344 23,138 1,605,255 1,628,393 Warehouse lending — — — — — 641,976 641,976 Commercial portfolio 17,812 34,301 713 143,945 196,771 39,907,180 40,103,951 Residential 8,246 3,083 — 25,424 36,753 7,926,667 7,963,420 Home equity 5,293 2,820 — 27,924 36,037 1,597,070 1,633,107 Other consumer 1,028 85 13 148 1,274 62,674 63,948 Consumer portfolio 14,567 5,988 13 53,496 74,064 9,586,411 9,660,475 Total $ 32,379 $ 40,289 $ 726 $ 197,441 $ 270,835 $ 49,493,591 $ 49,764,426 The following table provides additional information on non-accrual loans and leases: At June 30, 2023 At December 31, 2022 (In thousands) Non-accrual Non-accrual with No Allowance Non-accrual Non-accrual with No Allowance Commercial non-mortgage $ 95,332 $ 14,097 $ 71,884 $ 12,598 Asset-based 9,428 1,330 20,024 1,491 Commercial real estate 40,272 1,461 39,057 90 Multi-family 5,823 5,823 636 — Equipment financing 11,353 2,532 12,344 2,240 Commercial portfolio 162,208 25,243 143,945 16,419 Residential 26,750 10,656 25,424 10,442 Home equity 26,213 13,868 27,924 15,193 Other consumer 72 4 148 5 Consumer portfolio 53,035 24,528 53,496 25,640 Total $ 215,243 $ 49,771 $ 197,441 $ 42,059 Interest income on non-accrual loans and leases that would have been recognized had the loans and leases been current in accordance with their contractual terms totaled $6.9 million and $5.2 million for the three months ended June 30, 2023, and 2022, respectively, and $12.4 million and $8.6 million for the six months ended June 30, 2023, and 2022, respectively. Allowance for Credit Losses on Loans and Leases The following table summarizes the change in the ACL on loans and leases by portfolio segment: At or for the three months ended June 30, 2023 2022 (In thousands) Commercial Portfolio Consumer Portfolio Total Commercial Portfolio Consumer Portfolio Total ACL on loans and leases: Balance, beginning of period $ 554,750 $ 59,164 $ 613,914 $ 510,696 $ 58,675 $ 569,371 Provision (benefit) 38,824 (3,575) 35,249 12,041 (313) 11,728 Charge-offs (21,945) (1,085) (23,030) (18,757) (896) (19,653) Recoveries 1,024 1,754 2,778 7,765 2,288 10,053 Balance, end of period $ 572,653 $ 56,258 $ 628,911 $ 511,745 $ 59,754 $ 571,499 At or for the six months ended June 30, 2023 2022 (In thousands) Commercial Portfolio Consumer Portfolio Total Commercial Portfolio Consumer Portfolio Total ACL on loans and leases: Balance, beginning of period $ 533,125 $ 61,616 $ 594,741 $ 257,877 $ 43,310 $ 301,187 Adoption of ASU No. 2022-02 7,704 (1,831) 5,873 — — — Initial allowance for PCD loans and leases (1) — — — 78,376 9,669 88,045 Provision (benefit) 77,581 (4,511) 73,070 196,368 4,428 200,796 Charge-offs (48,355) (2,183) (50,538) (30,005) (2,016) (32,021) Recoveries 2,598 3,167 5,765 9,129 4,363 13,492 Balance, end of period $ 572,653 $ 56,258 $ 628,911 $ 511,745 $ 59,754 $ 571,499 Individually evaluated for credit losses 46,215 7,513 53,728 38,847 4,450 43,297 Collectively evaluated for credit losses $ 526,438 $ 48,745 $ 575,183 $ 472,898 $ 55,304 $ 528,202 (1) Represents the establishment of the initial reserve for PCD loans and leases, which is reported net of $48.3 million of day one charge-offs recognized at the date of acquisition in accordance with GAAP. Credit Quality Indicators To measure credit risk for the commercial portfolio, the Company employs a dual grade credit risk grading system for estimating the PD and LGD. The credit risk grade system assigns a rating to each borrower and to the facility, which together form a Composite Credit Risk Profile. The credit risk grade system categorizes borrowers by common financial characteristics that measure the credit strength of borrowers and facilities by common structural characteristics. The Composite Credit Risk Profile has ten grades, with each grade corresponding to a progressively greater risk of loss. Grades (1) to (6) are considered pass ratings, and grades (7) to (10) are considered criticized, as defined by the regulatory agencies. A (7) "Special Mention" rating has a potential weakness that, if left uncorrected, may result in deterioration of the repayment prospects for the asset. A (8) "Substandard" rating has a well-defined weakness that jeopardizes the full repayment of the debt. A (9) "Doubtful" rating has all of the same weaknesses as a substandard asset with the added characteristic that the weakness makes collection or liquidation in full given current facts, conditions, and values improbable. Assets classified as a (10) "Loss" rating are considered uncollectible and are charged-off. Risk ratings, which are assigned to differentiate risk within the portfolio, are reviewed on an ongoing basis and revised to reflect changes in a borrower's current financial position and outlook, risk profile, and the related collateral and structural position. Loan officers review updated financial information or other loan factors on at least an annual basis for all pass rated loans to assess the accuracy of the risk grade. Criticized loans undergo more frequent reviews and enhanced monitoring. To measure credit risk for the consumer portfolio, the most relevant credit characteristic is the FICO score, which is a widely used credit scoring system that ranges from 300 to 850. A lower FICO score is indicative of higher credit risk and a higher FICO score is indicative of lower credit risk. FICO scores are updated on at least a quarterly basis. The following tables summarize the amortized cost basis of commercial loans and leases by Composite Credit Risk Profile grade and origination year: At June 30, 2023 (In thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Total Commercial non-mortgage: Risk rating: Pass $ 1,672,800 $ 4,814,327 $ 1,535,033 $ 814,981 $ 649,366 $ 1,081,197 $ 6,099,138 $ 16,666,842 Special mention 24,849 83,936 80,312 12,292 15,636 9,017 83,731 309,773 Substandard 23,672 60,311 15,390 32,278 45,315 36,438 65,017 278,421 Total commercial non-mortgage 1,721,321 4,958,574 1,630,735 859,551 710,317 1,126,652 6,247,886 17,255,036 Current period gross write-offs 324 329 535 511 178 3,675 — 5,552 Asset-based: Risk rating: Pass 10,964 8,284 — 1,565 9,427 56,838 1,487,079 1,574,157 Special mention — — — — — 381 71,033 71,414 Substandard — — — — 1,330 — 71,350 72,680 Total asset-based 10,964 8,284 — 1,565 10,757 57,219 1,629,462 1,718,251 Current period gross write-offs — — — — 13,189 — — 13,189 Commercial real estate: Risk rating: Pass 1,488,568 3,589,054 1,912,030 1,356,330 1,329,052 3,397,728 149,322 13,222,084 Special mention 656 2,496 27,071 31,689 23,739 58,074 1,408 145,133 Substandard 15,936 512 16,658 15,447 54,635 71,846 — 175,034 Total commercial real estate 1,505,160 3,592,062 1,955,759 1,403,466 1,407,426 3,527,648 150,730 13,542,251 Current period gross write-offs — — 2,574 3,813 1,059 21,094 — 28,540 Multi-family: Risk rating: Pass 992,039 1,911,526 1,003,245 449,847 607,503 2,077,167 1 7,041,328 Special mention — — — 22,471 364 41,458 — 64,293 Substandard — — — 373 — 12,826 — 13,199 Total multi-family 992,039 1,911,526 1,003,245 472,691 607,867 2,131,451 1 7,118,820 Current period gross write-offs — — — — — 1,033 — 1,033 Equipment financing: Risk rating: Pass 201,925 348,890 284,909 253,271 243,348 124,924 — 1,457,267 Special mention — — 11,296 8,751 13,031 7,207 — 40,285 Substandard — 3,290 5,466 12,452 4,721 12,083 — 38,012 Total equipment financing 201,925 352,180 301,671 274,474 261,100 144,214 — 1,535,564 Current period gross write-offs — — — — — 41 — 41 Warehouse lending: Risk rating: Pass — — — — — — 708,560 708,560 Total warehouse lending — — — — — — 708,560 708,560 Current period gross write-offs — — — — — — — — Total commercial portfolio $ 4,431,409 $ 10,822,626 $ 4,891,410 $ 3,011,747 $ 2,997,467 $ 6,987,184 $ 8,736,639 $ 41,878,482 Current period gross write-offs $ 324 $ 329 $ 3,109 $ 4,324 $ 14,426 $ 25,843 $ — $ 48,355 At December 31, 2022 (In thousands) 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Total Commercial non-mortgage: Pass $ 5,154,781 $ 1,952,158 $ 965,975 $ 792,977 $ 593,460 $ 780,200 $ 5,670,532 $ 15,910,083 Special mention 104,277 15,598 21,168 263 14,370 7,770 40,142 203,588 Substandard 28,203 11,704 69,954 36,604 70,634 16,852 41,917 275,868 Doubtful — — — 1 — — 3,255 3,256 Total commercial non-mortgage 5,287,261 1,979,460 1,057,097 829,845 678,464 804,822 5,755,846 16,392,795 Asset-based: Pass 19,659 3,901 9,424 14,413 5,163 55,553 1,551,250 1,659,363 Special mention — — — — — — 80,476 80,476 Substandard — — — 1,491 — — 80,312 81,803 Total asset-based 19,659 3,901 9,424 15,904 5,163 55,553 1,712,038 1,821,642 Commercial real estate: Pass 3,420,635 2,246,672 1,556,185 1,605,869 1,058,730 2,681,052 97,832 12,666,975 Special mention 21,878 8,995 7,264 37,570 47,419 66,652 1,000 190,778 Substandard 519 2,459 216 31,163 47,021 57,997 — 139,375 Doubtful — — — 1 — 34 — 35 Total commercial real estate 3,443,032 2,258,126 1,563,665 1,674,603 1,153,170 2,805,735 98,832 12,997,163 Multi-family: Pass 1,992,980 1,057,705 507,065 694,066 444,564 1,748,337 51,655 6,496,372 Special mention 37,677 — — 95 40,307 726 8,838 87,643 Substandard — — 382 — 12,681 24,904 — 37,967 Total multi-family 2,030,657 1,057,705 507,447 694,161 497,552 1,773,967 60,493 6,621,982 Equipment financing: Pass 388,641 345,792 331,419 308,441 98,874 83,264 — 1,556,431 Special mention — 185 — 11,965 6,775 25 — 18,950 Substandard 314 16,711 18,436 5,016 5,307 7,228 — 53,012 Total equipment financing 388,955 362,688 349,855 325,422 110,956 90,517 — 1,628,393 Warehouse lending: Pass — — — — — — 641,976 641,976 Total warehouse lending — — — — — — 641,976 641,976 Total commercial portfolio $ 11,169,564 $ 5,661,880 $ 3,487,488 $ 3,539,935 $ 2,445,305 $ 5,530,594 $ 8,269,185 $ 40,103,951 The following tables summarize the amortized cost basis of consumer loans by FICO score and origination year: At June 30, 2023 (In thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Total Residential: Risk rating: 800+ $ 83,586 $ 711,811 $ 1,063,248 $ 438,330 $ 158,719 $ 967,612 $ — $ 3,423,306 740-799 215,262 834,914 843,118 331,838 101,576 697,162 — 3,023,870 670-739 75,016 334,227 302,307 87,497 56,903 366,022 — 1,221,972 580-669 6,654 49,107 52,155 14,510 5,893 124,153 — 252,472 579 and below 423 46,418 4,669 2,906 108,166 55,980 — 218,562 Total residential 380,941 1,976,477 2,265,497 875,081 431,257 2,210,929 — 8,140,182 Current period gross write-offs — — 2 — — 273 — 275 Home equity: Risk rating: 800+ 13,079 27,754 35,706 26,457 7,471 61,655 414,584 586,706 740-799 13,347 24,237 30,998 16,481 6,992 38,169 374,503 504,727 670-739 10,007 16,092 15,479 5,914 3,724 30,021 248,766 330,003 580-669 943 2,931 2,872 1,246 1,200 11,552 71,317 92,061 579 and below 278 652 572 596 392 7,241 29,622 39,353 Total home equity 37,654 71,666 85,627 50,694 19,779 148,638 1,138,792 1,552,850 Current period gross write-offs — — — — — 494 — 494 Other consumer: Risk rating: 800+ 386 516 260 402 622 180 22,092 24,458 740-799 704 715 2,354 1,011 1,515 581 4,443 11,323 670-739 377 640 430 1,447 2,403 362 8,350 14,009 580-669 57 178 132 280 566 91 1,221 2,525 579 and below 70 131 82 21 57 42 1,816 2,219 Total other consumer 1,594 2,180 3,258 3,161 5,163 1,256 37,922 54,534 Current period gross write-offs 750 7 3 176 232 246 — 1,414 Total consumer portfolio $ 420,189 $ 2,050,323 $ 2,354,382 $ 928,936 $ 456,199 $ 2,360,823 $ 1,176,714 $ 9,747,566 Current period gross write-offs $ 750 $ 7 $ 5 $ 176 $ 232 $ 1,013 $ — $ 2,183 At December 31, 2022 (In thousands) 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Total Residential: 800+ $ 527,408 $ 954,568 $ 469,518 $ 160,596 $ 28,361 $ 997,409 $ — $ 3,137,860 740-799 963,026 946,339 311,295 111,913 43,684 689,771 — 3,066,028 670-739 381,515 350,671 103,999 62,365 18,451 384,687 — 1,301,688 580-669 40,959 49,648 14,484 5,836 2,357 138,107 — 251,391 579 and below 52,464 3,693 2,057 84,032 1,299 62,908 — 206,453 Total residential 1,965,372 2,304,919 901,353 424,742 94,152 2,272,882 — 7,963,420 Home equity: 800+ 25,475 35,129 25,612 7,578 12,545 55,352 465,318 627,009 740-799 26,743 35,178 17,621 8,111 7,765 32,270 398,692 526,380 670-739 18,396 16,679 8,175 3,635 7,614 30,060 259,646 344,205 580-669 2,848 3,068 1,520 1,456 1,163 13,607 76,614 100,276 579 and below 426 386 651 661 563 4,736 27,814 35,237 Total home equity 73,888 90,440 53,579 21,441 29,650 136,025 1,228,084 1,633,107 Other consumer: 800+ 495 218 544 1,045 247 56 19,196 21,801 740-799 888 2,624 1,959 2,494 941 364 12,218 21,488 670-739 977 603 2,480 4,238 1,041 118 6,107 15,564 580-669 211 117 337 801 173 54 2,223 3,916 579 and below 169 101 29 116 36 21 707 1,179 Total other consumer 2,740 3,663 5,349 8,694 2,438 613 40,451 63,948 Total consumer portfolio $ 2,042,000 $ 2,399,022 $ 960,281 $ 454,877 $ 126,240 $ 2,409,520 $ 1,268,535 $ 9,660,475 Collateral Dependent Loans and Leases A loan or lease is considered collateral dependent when the borrower is experiencing financial difficulty and repayment is substantially expected to be provided through the operation or sale of collateral. At June 30, 2023, and December 31, 2022, the carrying amount of collateral dependent commercial loans and leases totaled $31.9 million and $43.8 million, respectively, and the carrying amount of collateral dependent consumer loans totaled $39.2 million and $45.2 million, respectively. Commercial non-mortgage, asset-based, and equipment financing loans and leases are generally secured by machinery and equipment, inventory, receivables, or other non-real estate assets, whereas commercial real estate, multi-family, residential, home equity, and other consumer loans are secured by real estate. The ACL for collateral dependent loans and leases is individually assessed based on the fair value of the collateral less costs to sell. At June 30, 2023, and December 31, 2022, the collateral value associated with collateral dependent loans and leases totaled $91.8 million and $108.0 million, respectively. Modifications for Borrowers Experiencing Financial Difficulty On January 1, 2023, the Company adopted ASU 2022-02, which eliminates the accounting guidance for TDRs and enhances the disclosure requirements for certain loan modifications when a borrower is experiencing financial difficulty. For a description of the Company's accounting policies related to the accounting and reporting of TDRs, for which comparative period information is presented, refer to Note 1: Summary of Significant Accounting Policies of the Company's Annual Report on Form 10-K for the year ended December 31, 2022. In certain circumstances, the Company enters into agreements to modify the terms of loans to borrowers experiencing financial difficulty. A variety of solutions are offered to borrowers experiencing financial difficulty, including loan modifications that may result in principal forgiveness, interest rate reductions, payment delays, term extension, or a combination thereof. The following is a description of each of these types of modifications: • Principal forgiveness – The outstanding principal balance of a loan may be reduced by a specified amount. Principal forgiveness may occur voluntarily as part of a negotiated agreement with a borrower, or involuntarily through a bankruptcy proceeding. • Interest rate reductions – Includes modifications where the contractual interest rate of the loan has been reduced. • Payment delays – Deferral arrangements which allow borrowers to delay a scheduled loan payment to a later date. Deferred loan payments do not affect the original contractual terms of the loan. Modifications that result in only an insignificant payment delay are not disclosed. The Company considers that a three month or less payment delay generally would be considered insignificant. • Term extensions – Extensions of the original contractual maturity date of the loan. • Combination – Combination includes loans that have undergone more than one of the above loan modification types. Significant judgment is required to determine if a borrower is experiencing financial difficulty. These considerations vary by portfolio class. The Company has identified modifications to borrowers experiencing financial difficulty that are included in its disclosures as follows: • Commercial: The Company evaluates modifications of loans to commercial borrowers that are rated substandard or worse, and includes the modifications in its disclosures to the extent that the modification is considered • Consumer: The Company evaluates modifications of loans to consumer borrowers subject to its loss mitigation program and includes them in its disclosures to the extent that the modification is considered other-than-insignificant. The following table summarizes the amortized cost basis at June 30, 2023, of loans modified to borrowers experiencing financial difficulty, disaggregated by class and type of concession granted: For the three months ended June 30, 2023 (In thousands) Interest Rate Reduction Term Extension Payment Delay Combination Term Extension and Interest Rate Reduction Combination Term Extension and Payment Delay Total % of Total Class (2) Commercial non-mortgage $ — $ 13,025 $ 9,548 $ 336 $ 11,520 $ 34,429 0.2 % Commercial real estate — 11,522 171 — — 11,693 0.1 Equipment financing — — 1,408 — — 1,408 0.1 Residential — 1,159 1,606 — — 2,765 — Home equity 64 52 — 145 — 261 — Total (1) $ 64 $ 25,758 $ 12,733 $ 481 $ 11,520 $ 50,556 0.1 % For the six months ended June 30, 2023 (In thousands) Interest Rate Reduction Term Extension Payment Delay Combination Term Extension and Interest Rate Reduction Combination Term Extension and Payment Delay Total % of Total Class (2) Commercial non-mortgage $ — $ 39,502 $ 9,548 $ 336 $ 11,520 $ 60,906 0.4 % Commercial real estate — 14,762 171 — — 14,933 0.1 Equipment financing — — 1,408 — — 1,408 0.1 Residential — 1,159 1,606 — — 2,765 — Home equity 64 108 — 209 — 381 — Total (1) $ 64 $ 55,531 $ 12,733 $ 545 $ 11,520 $ 80,393 0.2 % (1) The total amortized cost excludes accrued interest receivable of $0.2 million for each reporting period. (2) Represents the total amortized cost of the loans modified as a percentage of the total period end loan balance by class. The following table describes the financial effect of the modifications made to borrowers experiencing financial difficulty: For the three months ended June 30, 2023 Financial Effect Interest Rate Reduction: Home equity Reduced weighted average interest rate by 0.5% Term Extension: Commercial non-mortgage Extended term by a weighted average of 1.8 years Commercial real estate Extended term by a weighted average of 1.0 year Residential Extended term by a weighted average of 1.4 years Home equity Extended term by a weighted average of 14.4 years Payment Delay: Commercial non-mortgage Provided partial payment deferrals for a weighted average of 0.5 years Commercial real estate Provided payment deferrals for a weighted average of 0.3 years to be received at contractual maturity Equipment financing Provided partial payment deferrals for a weighted average of 0.5 years Residential Provided payment deferrals for a weighted average of 1.0 year Combination Term Extension and Interest Rate Reduction: Commercial non-mortgage Extended term by a weighted average of 3.7 years and reduced weighted average interest rate by 1.3% Home equity Extended term by a weighted average of 16.0 years and reduced weighted average interest rate by 1.4% Combination Term Extension and Payment Delay: Commercial non-mortgage Extended term by a weighted average of 1.0 year and provided payment deferrals for a weighted average of 1.3 years For the six months ended June 30, 2023 Financial Effect Interest Rate Reduction: Home equity Reduced weighted average interest rate by 0.5% Term Extension: Commercial non-mortgage Extended term by a weighted average of 0.9 years Commercial real estate Extended term by a weighted average of 1.3 years Residential Extended term by a weighted average of 1.4 years Home equity Extended term by a weighted average of 11.5 years Payment Delay: Commercial non-mortgage Provided partial payment deferrals for a weighted average of 0.5 years Commercial real estate Provided payment deferrals for a weighted average of 0.3 years to be received at contractual maturity Equipment financing Provided partial payment deferrals for a weighted average of 0.5 years Residential Provided payment deferrals for a weighted average of 1.0 year Combination Term Extension and Rate Reduction: Commercial non-mortgage Extended term by a weighted average of 3.7 years and reduced weighted average interest rate by 1.3% Home equity Extended term by a weighted average of 12.7 years and reduced weighted average interest rate by 1.4% Combination Term Extension and Payment Delay: Commercial non-mortgage Extended term by a weighted average of 1.0 year and provided payment deferrals for a weighted average of 1.3 years The Company closely monitors the performance of the loans that are modified to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. The following table summarizes the aging of loans that have been modified in the six months ended June 30, 2023: At June 30, 2023 (In thousands) Current 30-59 Days 60-89 Days 90+ Days Non-Accrual Total Commercial non-mortgage $ 25,006 $ — $ — $ — $ 35,900 $ 60,906 Commercial real estate 14,762 171 — — — 14,933 Equipment financing 1,408 — — — — 1,408 Residential — — — — 2,765 2,765 Home equity 116 — — — 265 381 Total $ 41,292 $ 171 $ — $ — $ 38,930 $ 80,393 There were no loans made to borrowers experiencing financial difficulty that were modified during the three or six months ended June 30, 2023, and that subsequently defaulted. For the purposes of this disclosure, a payment default is defined as 90 or more days past due and still accruing. Non-accrual loans that are modified to borrowers experiencing financial difficulty remain on non-accrual status until the borrower has demonstrated performance under the modified terms. Commitments to lend additional funds to borrowers experiencing financial difficulty whose loans had been modified were not significant. Troubled Debt Restructurings Prior to the Adoption of ASU 2022-02 The following table summarizes information related to TDRs: (In thousands) At December 31, 2022 Accrual status $ 110,868 Non-accrual status 83,954 Total TDRs $ 194,822 Additional funds committed to borrowers in TDR status $ 1,724 Specific reserves for TDRs included in the ACL on loans and leases: Commercial portfolio $ 14,578 Consumer portfolio 3,559 The following table summarizes loans and leases modified as TDRs by class and modification type during the three and six months ended June 30, 2022: Three months ended June 30, 2022 Six months ended June 30, 2022 (Dollars in thousands) Number of Recorded Investment (1) Number of Recorded Investment (1) Commercial non-mortgage Term extension — $ — 2 $ 97 Combination - Term extension and interest rate reduction 3 351 5 443 Other (2) 1 22,964 1 22,964 Equipment financing Other (2) 1 1,157 1 1,157 Residential Extended maturity 1 893 1 893 Other (2) 2 308 6 2,762 Home equity Adjusted interest rate 1 74 1 74 Combination - Term extension and interest rate reduction 7 680 11 724 Other (2) 9 399 24 1,333 Total TDRs 25 $ 26,826 52 $ 30,447 (1) Post-modification balances approximated pre-modification balances. The aggregate amount of charge-offs due to restructurings was not significant. (2) Other included covenant modifications, forbearance, discharges under Chapter 7 bankruptcy, or other concessions. The portion of TDRs deemed to be uncollectible and charged-off totaled $1.0 million for the commercial portfolio and $0.1 million for the consumer portfolio for the three months ended June 30, 2022, and $10.0 million for the commercial portfolio and $0.1 million for the consumer portfolio for the six months ended June 30, 2022. There were no significant loans and leases modified as TDRs within the previous 12 months and for which there was a payment default during the three and six months ended June 30, 2022.

Transfers and Servicing of Fina

Transfers and Servicing of Financial Assets	6 Months Ended
Transfers and Servicing of Financial Assets	Jun. 30, 2023
Transfers and Servicing [Abstract]
Transfers and Servicing of Financial Assets	Transfers and Servicing of Financial Assets The Company originates and sells residential mortgage loans in the normal course of business, primarily to government-sponsored entities through established programs and securitizations. Residential mortgage origination fees, adjustments for changes in fair value, and any gain or loss recognized on residential mortgage loans sold are included in Mortgage banking activities on the accompanying Condensed Consolidated Statements of Income. The following table summarizes information related to mortgage banking activities: Three months ended June 30, Six months ended June 30, (In thousands) 2023 2022 2023 2022 Net gain on sale $ 91 $ 106 $ 168 $ 503 Origination fees 34 37 45 172 Fair value adjustment 4 (41) (25) (145) Mortgage banking activities $ 129 $ 102 $ 188 $ 530 Proceeds from sale $ 4,828 $ 6,080 $ 8,660 $ 32,833 Loans sold with servicing rights retained 4,119 4,954 5,348 30,317 Under certain circumstances, the Company may decide to sell loans that were not originated or otherwise acquired with the intent to sell. During the three months ended June 30, 2023, and 2022, the Company sold commercial loans not originated for sale for proceeds of $334.4 million and $67.4 million, respectively, which resulted in net gains on sale of $0.6 million and $1.4 million, respectively. During the six months ended June 30, 2023, and 2022, the Company sold commercial loans not originated for sale for proceeds of $441.1 million and $118.5 million, respectively, which resulted in net gains on sale of $0.7 million and $3.2 million, respectively. In addition, the Company may retain servicing rights on its residential mortgage loans sold in the normal course of business. At June 30, 2023, and December 31, 2022, the aggregate principal balance of residential mortgage loans serviced for others totaled $1.9 billion and $2.0 billion, respectively. Mortgage servicing rights are held at the lower of cost, net of accumulated amortization, or fair market value, and are included in Accrued interest receivable and other assets on the accompanying Condensed Consolidated Balance Sheets. The Company assesses mortgage servicing rights for impairment each quarter and establishes or adjusts the valuation allowance to the extent that amortized cost exceeds the estimated fair market value. The following table presents the change in the carrying amount for mortgage servicing rights: Three months ended June 30, Six months ended June 30, (In thousands) 2023 2022 2023 2022 Balance, beginning of period $ 9,189 $ 9,735 $ 9,515 $ 9,237 Acquired from Sterling — — — 859 Additions 37 56 52 265 Amortization (368) (1,199) (709) (1,769) Balance, end of period $ 8,858 $ 8,592 $ 8,858 $ 8,592 Loan servicing fees, net of mortgage servicing rights amortization, were $1.3 million and $0.5 million for the three months ended June 30, 2023, and 2022, respectively, and $2.6 million and $1.6 million for the six months ended June 30, 2023, and 2022, respectively, and are included in Loan and lease related fees on the accompanying Condensed Consolidated Statements of Income. Information regarding the fair value of loans held for sale and mortgage servicing rights can be found within Note 14: Fair Value Measurements.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	6 Months Ended
Goodwill and Other Intangible Assets	Jun. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill The following table summarizes changes in the carrying amount of goodwill: (In thousands) At June 30, At December 31, Balance, beginning of period $ 2,514,104 $ 538,373 interLINK acquisition 143,216 — Sterling merger (1) (25,561) 1,939,765 Bend acquisition (1) (294) 35,966 Balance, end of period $ 2,631,465 $ 2,514,104 (1) The 2023 changes reflect adjustments recorded within the one-year measurement period, which were identified in the first quarter as a result of extended information gathering and new information that arose from integration activities. The allocation of the purchase price and goodwill calculations for both the Sterling merger and Bend acquisition were final as of March 31, 2023. Information regarding goodwill by reportable segment can be found within Note 16: Segment Reporting. Other Intangible Assets The following table summarizes other intangible assets: At June 30, 2023 At December 31, 2022 (In thousands) Gross Carrying Accumulated Net Carrying Gross Carrying Accumulated Net Carrying Core deposits $ 146,037 $ 45,623 $ 100,414 $ 146,037 $ 36,710 $ 109,327 Customer relationships (1) 151,000 34,362 116,638 115,000 24,985 90,015 Non-competition agreement (1) 4,000 400 3,600 — — — Total other intangible assets $ 301,037 $ 80,385 $ 220,652 $ 261,037 $ 61,695 $ 199,342 (1) The increase in the gross carrying amount is attributed to the acquisition of interLINK in the first quarter of 2023, in which the Company identified and recorded a $36.0 million intangible asset for broker dealer relationships, which is being amortized on an accelerated basis over an estimated useful life of 10 years, and a $4.0 million non-competition agreement, which is being amortized on a straight-line basis over an estimated useful life of 5 years. The remaining estimated aggregate future amortization expense for other intangible assets is as follows: (In thousands) At June 30, Remainder of 2023 $ 17,517 2024 29,618 2025 25,956 2026 25,565 2027 25,565 Thereafter 96,431

Deposits

Deposits	6 Months Ended
Deposits	Jun. 30, 2023
Deposit Liabilities [Abstract]
Deposits	Deposits The following table summarizes deposits by type: (In thousands) At June 30, At December 31, Non-interest-bearing: Demand $ 11,157,390 $ 12,974,975 Interest-bearing: Health savings accounts 8,206,844 7,944,892 Checking 8,775,975 9,237,529 Money market 16,189,678 11,062,652 Savings 7,131,587 8,673,343 Time deposits 7,286,058 4,160,949 Total interest-bearing $ 47,590,142 $ 41,079,365 Total deposits $ 58,747,532 $ 54,054,340 Time deposits, money market, and interest-bearing checking obtained through brokers (1) $ 3,234,854 $ 1,964,873 Aggregate amount of time deposit accounts that exceeded the FDIC limit 3,553,953 1,894,950 Demand deposit overdrafts reclassified as loan balances 9,312 8,721 (1) Excludes $4.3 billion of money market sweep deposits received through interLINK at June 30, 2023. The following table summarizes the scheduled maturities of time deposits: (In thousands) At June 30, Remainder of 2023 $ 4,189,693 2024 2,859,064 2025 134,973 2026 53,889 2027 35,600 Thereafter 12,839 Total time deposits $ 7,286,058

Borrowings

Borrowings	6 Months Ended
Borrowings	Jun. 30, 2023
Debt Disclosure [Abstract]
Borrowings	Borrowings The following table summarizes securities sold under agreements to repurchase and other borrowings: At June 30, 2023 At December 31, 2022 (Dollars in thousands) Total Outstanding Rate Total Outstanding Rate Securities sold under agreements to repurchase (1) $ 243,580 0.11 % $ 282,005 0.11 % Federal funds purchased — — 869,825 4.44 Securities sold under agreements to repurchase and other borrowings $ 243,580 0.11 % $ 1,151,830 3.38 % (1) The Company has the right of offset with respect to all repurchase agreement assets and liabilities. Total securities sold under agreements to repurchase are presented as gross transactions, as only liabilities are outstanding for the periods presented. Securities sold under agreements to repurchase, all of which have an original maturity of one year or less for the periods presented, are used as a source of borrowed funds and are collateralized by Agency MBS and Corporate debt. The Company's repurchase agreement counterparties are limited to primary dealers in government securities, and commercial and municipal customers through the Corporate Treasury function. The Company may also purchase unsecured term and overnight federal funds to satisfy its short-term liquidity needs. The following table summarizes information for FHLB advances: At June 30, 2023 At December 31, 2022 (Dollars in thousands) Total Outstanding Weighted- Total Outstanding Weighted- Maturing within 1 year $ 4,300,180 5.26 % $ 5,450,187 4.40 % After 1 but within 2 years — — — — After 2 but within 3 years — — — — After 3 but within 4 years — — — — After 4 but within 5 years 478 1.35 252 — After 5 years 9,713 2.07 10,113 2.09 Total FHLB advances $ 4,310,371 5.26 % $ 5,460,552 4.39 % Aggregate carrying value of assets pledged as collateral $ 21,308,244 $ 13,692,379 Remaining borrowing capacity at FHLB 11,559,717 4,291,326 The Bank may borrow up to the amount of eligible mortgages and securities that have been pledged as collateral to secure FHLB advances, which includes certain residential and commercial real estate loans, home equity lines of credit, CMBS, Agency MBS, Agency CMO, U.S. Treasury notes, and MBS. The Bank was in compliance with its FHLB collateral requirements at both June 30, 2023, and December 31, 2022. The following table summarizes long-term debt: (Dollars in thousands) At June 30, At December 31, 4.375% Senior fixed-rate notes due February 15, 2024 (2) $ 132,550 $ 150,000 4.100% Senior fixed-rate notes due March 25, 2029 (3) 330,781 333,458 4.000% Subordinated fixed-to-floating rate notes due December 30, 2029 274,000 274,000 3.875% Subordinated fixed-to-floating rate notes due November 1, 2030 225,000 225,000 Junior subordinated debt Webster Statutory Trust I floating-rate notes due September 17, 2033 (4) 77,320 77,320 Total senior and subordinated debt 1,039,651 1,059,778 Discount on senior fixed-rate notes (647) (756) Debt issuance cost on senior fixed-rate notes (1,612) (1,824) Premium on subordinated fixed-to-floating rate notes 14,866 15,930 Long-term debt (1) $ 1,052,258 $ 1,073,128 (1) The classification of debt as long-term is based on the initial terms of greater than one year as of the date of issuance. (2) During the three months ended June 30, 2023, the Company repurchased and retired $17.5 million of these senior notes at 96 cents on the dollar. The resulting $0.7 million gain recognized on extinguishment was recorded in Other income on the accompanying Condensed Consolidated Statements of Income. (3) The Company de-designated its fair value hedging relationship on these senior notes in 2020. A basis adjustment of $30.8 million and $33.5 million at June 30, 2023, and December 31, 2022, respectively, is included in the carrying value and is being amortized over the remaining life of the senior notes. (4) The interest rate on the Webster Statutory Trust I floating-rate notes at June 30, 2023, and December 31, 2022, was calculated based on 3-month LIBOR plus 2.95%, which yielded 8.46% and 7.69% respectively.

Accumulated Other Comprehensive

Accumulated Other Comprehensive (Loss) Income, Net of Tax	6 Months Ended
Accumulated Other Comprehensive (Loss) Income, Net of Tax	Jun. 30, 2023
Equity [Abstract]
Accumulated Other Comprehensive (Loss) Income, Net of Tax	Accumulated Other Comprehensive (Loss) Income, Net of Tax The following tables summarize the changes in each component of accumulated other comprehensive (loss) income, net of tax: Three months ended June 30, 2023 Six months ended June 30, 2023 (In thousands) Securities Available For Sale Derivative Instruments Defined Benefit Pension and Other Postretirement Benefit Plans Total Securities Available Derivative Instruments Defined Benefit Pension and Other Postretirement Benefit Plans Total Balance, beginning of period $ (559,542) $ 12,500 $ (40,978) $ (588,020) $ (631,160) $ (8,874) $ (44,926) $ (684,960) Other comprehensive (loss) income before reclassifications (85,072) (48,123) — (133,195) (28,437) (27,341) 3,553 (52,225) Amounts reclassified from accumulated other comprehensive (loss) income 35 600 1,757 2,392 15,018 1,192 2,152 18,362 Other comprehensive (loss) income, net of tax (85,037) (47,523) 1,757 (130,803) (13,419) (26,149) 5,705 (33,863) Balance, end of period $ (644,579) $ (35,023) $ (39,221) $ (718,823) $ (644,579) $ (35,023) $ (39,221) $ (718,823) Three months ended June 30, 2022 Six months ended June 30, 2022 (In thousands) Securities Available For Sale Derivative Instruments Defined Benefit Pension and Other Postretirement Benefit Plans Total Securities Available Derivative Instruments Defined Benefit Pension and Other Postretirement Benefit Plans Total Balance, beginning of period $ (240,343) $ (1,774) $ (33,606) $ (275,723) $ 4,536 $ 6,070 $ (33,186) $ (22,580) Other comprehensive (loss) (205,273) (1,070) (328) (206,671) (450,152) (9,683) (1,047) (460,882) Amounts reclassified from accumulated other comprehensive (loss) income — 762 300 1,062 — 1,531 599 2,130 Other comprehensive (loss), (205,273) (308) (28) (205,609) (450,152) (8,152) (448) (458,752) Balance, end of period $ (445,616) $ (2,082) $ (33,634) $ (481,332) $ (445,616) $ (2,082) $ (33,634) $ (481,332) The following table further summarizes the amounts reclassified from accumulated other comprehensive (loss) income: Accumulated Other Comprehensive Three months ended Six months ended Associated Line Item on the June 30, June 30, 2023 2022 2023 2022 (In thousands) Investment securities available-for-sale: Net holding (losses) $ (48) $ — $ (20,531) $ — (Loss) on sale of investment securities Tax benefit 13 — 5,513 — Income tax expense Net of tax $ (35) $ — $ (15,018) $ — Derivative instruments: Hedge terminations $ (99) $ (76) $ (175) $ (153) Interest expense Premium amortization (724) (969) (1,460) (1,947) Interest income Tax benefit 223 283 443 569 Income tax expense Net of tax $ (600) $ (762) $ (1,192) $ (1,531) Defined benefit pension and other postretirement benefit plans: Actuarial net loss amortization $ (2,410) $ (411) $ (2,952) $ (822) Other expense Tax benefit 653 111 800 223 Income tax expense Net of tax $ (1,757) $ (300) $ (2,152) $ (599)

Regulatory Capital and Restrict

Regulatory Capital and Restrictions	6 Months Ended
Regulatory Capital and Restrictions	Jun. 30, 2023
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Regulatory Capital and Restrictions	Regulatory Capital and Restrictions Capital Requirements The Holding Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory actions by regulators that could have a direct material effect on the Company’s financial statements. Under capital adequacy guidelines and/or the regulatory framework for prompt corrective action (such provisions apply to the Bank only), both the Holding Company and the Bank must meet specific capital guidelines that involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated pursuant to regulatory directives. Capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. Quantitative measures established by the Basel III Capital Rules to ensure capital adequacy require the Company to maintain minimum ratios of CET1 capital to total risk-weighted assets (CET1 risk-based capital), Tier 1 capital to total risk-weighted assets (Tier 1 risk-based capital), Total capital to total risk-weighted assets (Total risk-based capital), and Tier 1 capital to average tangible assets (Tier 1 leverage capital), as defined in the regulations. CET1 capital consists of common stockholders’ equity less deductions for goodwill and other intangible assets, and certain deferred tax adjustments. Upon adoption of the Basel III Capital Rules, the Company elected to opt-out of the requirement to include certain components of AOCI in CET1 capital. Tier 1 capital consists of CET1 capital plus preferred stock. Total capital consists of Tier 1 capital and Tier 2 capital, as defined in the regulations. Tier 2 capital includes permissible portions of subordinated debt and the ACL. At June 30, 2023, and December 31, 2022, both the Holding Company and the Bank were classified as well-capitalized. Management believes that no events or changes have occurred subsequent to year-end that would change this designation. The following tables provides information on the capital ratios for the Holding Company and the Bank: At June 30, 2023 Actual (1) Minimum Requirement Well Capitalized (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Webster Financial Corporation CET1 risk-based capital $ 5,923,265 10.65 % $ 2,502,484 4.5 % $ 3,614,699 6.5 % Total risk-based capital 7,368,290 13.25 4,448,860 8.0 5,561,075 10.0 Tier 1 risk-based capital 6,207,244 11.16 3,336,645 6.0 4,448,860 8.0 Tier 1 leverage capital 6,207,244 8.36 2,969,294 4.0 3,711,617 5.0 Webster Bank CET1 risk-based capital $ 6,780,817 12.21 % $ 2,498,477 4.5 % $ 3,608,911 6.5 % Total risk-based capital 7,350,677 13.24 4,441,736 8.0 5,552,170 10.0 Tier 1 risk-based capital 6,780,817 12.21 3,331,302 6.0 4,441,736 8.0 Tier 1 leverage capital 6,780,817 9.14 2,967,209 4.0 3,709,012 5.0 At December 31, 2022 Actual (1) Minimum Requirement Well Capitalized (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Webster Financial Corporation CET1 risk-based capital $ 5,822,369 10.71 % $ 2,446,344 4.5 % $ 3,533,608 6.5 % Total risk-based capital 7,203,029 13.25 4,349,056 8.0 5,436,320 10.0 Tier 1 risk-based capital 6,106,348 11.23 3,261,792 6.0 4,349,056 8.0 Tier 1 leverage capital 6,106,348 8.95 2,730,212 4.0 3,412,765 5.0 Webster Bank CET1 risk-based capital $ 6,661,504 12.28 % $ 2,442,058 4.5 % $ 3,527,417 6.5 % Total risk-based capital 7,165,935 13.20 4,341,437 8.0 5,426,796 10.0 Tier 1 risk-based capital 6,661,504 12.28 3,256,078 6.0 4,341,437 8.0 Tier 1 leverage capital 6,661,504 9.77 2,727,476 4.0 3,409,345 5.0 (1) In accordance with regulatory capital rules, the Company elected an option to delay the estimated impact of the adoption of CECL on its regulatory capital over a two-year deferral period, which ended on January 1, 2022, and a subsequent three-year transition period ending on December 31, 2024. During the three-year transition period, regulatory capital ratios will phase out the aggregate amount of the regulatory capital benefit provided from the delayed CECL adoption in the initial two years. For 2022, 2023, and 2024, the Company is allowed 75%, 50%, and 25%, respectively, of the regulatory capital benefit as of December 31, 2021, with full absorption occurring in 2025. Dividend Restrictions The Holding Company is dependent upon dividends from the Bank to provide funds for the payment of dividends to stockholders and for other cash requirements. Dividends paid by the Bank are subject to various federal and state regulatory limitations. Express approval by the OCC is required if the effect of dividends declared would cause the regulatory capital of the Bank to fall below specified minimum levels or if the amount would exceed net income for that year combined with undistributed net income for the preceding two years. The Bank paid the Holding Company $100.0 million and $250.0 million in dividends during the three and six months ended June 30, 2023, respectively, and $125.0 million in dividends during the three and six months ended June 30, 2022, for which no express approval from the OCC was required. Cash Restrictions

Variable Interest Entities

Variable Interest Entities	6 Months Ended
Variable Interest Entities	Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entities	Variable Interest Entities The Company has an investment interest in the following entities that each meet the definition of a variable interest entity. Information regarding the Company's consolidation of variable interest entities can be found within Note 1: Summary of Significant Accounting Policies in the Consolidated Financial Statements contained in Part II - Item 8. Financial Statements and Supplementary Data of the Company's Annual Report on Form 10-K for the year ended December 31, 2022. Consolidated Rabbi Trusts. The Company established a Rabbi Trust to meet its obligations due under the Webster Bank Deferred Compensation Plan for Directors and Officers and to mitigate expense volatility. The funding of the Rabbi Trust and the discontinuation of the Webster Bank Deferred Compensation Plan for Directors and Officers occurred during 2012. In connection with the Sterling merger in 2022, the Company acquired assets held in a separate Rabbi Trust that had been previously established to fund obligations due under the Greater New York Savings Bank Directors' Retirement Plan. Investments held in the Rabbi Trusts consist primarily of mutual funds that invest in equity and fixed income securities. The Company is considered the primary beneficiary of these Rabbi Trusts as it has the power to direct the activities of the Rabbi Trusts that most significantly impact its economic performance and it has the obligation to absorb losses and/or the right to receive benefits of the Rabbi Trusts that could potentially be significant. The Rabbi Trusts' assets are included in Accrued interest receivable and other assets on the accompanying Condensed Consolidated Balance Sheets. Investment earnings and any changes in fair value are included in Other income on the accompanying Condensed Consolidated Statements of Income. Additional information regarding the Rabbi Trusts' investments can be found within Note 14: Fair Value Measurements. Non-Consolidated Low-Income Housing Tax Credit Investments. The Company makes non-marketable equity investments in entities that sponsor affordable housing and other community development projects that qualify for the LIHTC Program pursuant to Section 42 of the Internal Revenue Code. The purpose of these investments is not only to assist the Bank in meeting its responsibilities under the CRA, but also to provide a return, primarily through the realization of tax benefits. While the Company's investment in an entity may exceed 50% of its outstanding equity interests, the entity is not consolidated as the Company is not the primary beneficiary. The Company has determined that it is not the primary beneficiary due to its inability to direct the activities that most significantly impact economic performance and the Company does not have the obligation to absorb losses and/or the right to receive benefits. The Company applies the proportional amortization method to subsequently measure its investments in qualified affordable housing projects. The following table summarizes the Company's LIHTC investments and related unfunded commitments: (In thousands) June 30, 2023 December 31, 2022 Gross investment in LIHTC investments $ 868,459 $ 797,453 Accumulated amortization (105,719) (69,424) Net investment in LIHTC investments $ 762,740 $ 728,029 Unfunded commitments for LIHTC investments $ 366,869 $ 335,959 The aggregate carrying value of the Company's LIHTC investments is included in Accrued interest receivable and other assets on the accompanying Condensed Consolidated Balance Sheets, and represents the Company's maximum exposure to loss. The related unfunded commitments are included in Accrued expenses and other liabilities on the accompanying Condensed Consolidated Balance Sheets. There were $68.2 million and $76.7 million of net commitments approved to fund LIHTC investments during the six months ended June 30, 2023, and 2022, respectively. Webster Statutory Trust. The Company owns all the outstanding common stock of Webster Statutory Trust, a financial vehicle that has issued, and in the future may issue, trust preferred securities. The Company is not the primary beneficiary of Webster Statutory Trust. Webster Statutory Trust's only assets are junior subordinated debentures that are issued by the Company, which were acquired using the proceeds from the issuance of trust preferred securities and common stock. The junior subordinated debentures are included in Long-term debt on the accompanying Condensed Consolidated Balance Sheets, and the related interest expense is included in Long-term debt on the accompanying Condensed Consolidated Statements of Income. Additional information regarding these junior subordinated debentures can be found within Note 8: Borrowings. Other Non-Marketable Investments. The Company invests in alternative investments comprising interests in non-public entities that cannot be redeemed since the underlying equity is distributed as the investment is liquidated. The ultimate timing and amount of these distributions cannot be predicted with reasonable certainty. For each of these alternative investments that is classified as a variable interest entity, the Company has determined that it is not the primary beneficiary due to its inability to direct the activities that most significantly impact economic performance. The aggregate carrying value of the Company's other non-marketable investments was $170.1 million and $144.9 million at June 30, 2023, and December 31, 2022, respectively, which is included in Accrued interest receivable and other assets on the accompanying Condensed Consolidated Balance Sheets, and its maximum exposure to loss, including unfunded commitments, was $293.9 million and $243.9 million, respectively. Additional information regarding the fair value of other non-marketable investments can be found within

Earnings Per Common Share

Earnings Per Common Share	6 Months Ended
Earnings Per Common Share	Jun. 30, 2023
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share The following table summarizes the calculation of basic and diluted earnings per common share: Three months ended June 30, Six months ended June 30, (In thousands, except per share data) 2023 2022 2023 2022 Net income $ 234,968 $ 182,311 $ 455,972 $ 165,564 Less: Preferred stock dividends 4,162 4,163 8,325 7,594 Net income available to common stockholders 230,806 178,148 447,647 157,970 Less: Earnings allocated to participating securities 2,235 1,718 4,073 1,456 Earnings applicable to common stockholders $ 228,571 $ 176,430 $ 443,574 $ 156,514 Weighted-average common shares outstanding - basic 172,739 175,845 172,752 161,698 Add: Effect of dilutive stock options and restricted stock 64 50 87 87 Weighted-average common shares outstanding - diluted 172,803 175,895 172,839 161,785 Basic earnings per common share $ 1.32 $ 1.00 $ 2.57 $ 0.97 Diluted earnings per common share 1.32 1.00 2.57 0.97 Earnings per common share is calculated under the two-class method in which all earnings (distributed and undistributed) are allocated to common stock and participating securities based on their respective rights to receive dividends. The Company may grant restricted stock, restricted stock units, non-qualified stock options, incentive stock options, or stock appreciation rights to certain employees and directors under its stock-based compensation programs, which entitle recipients to receive Potential common shares from performance-based restricted stock that were not included in the computation of dilutive earnings per common share because they were anti-dilutive under the treasury stock method were 263,674 and 174,840 for the three and six months ended June 30, 2023, respectively, and 379,308 and 298,617 for the three and six months ended

Derivative Financial Instrument

Derivative Financial Instruments	6 Months Ended
Derivative Financial Instruments	Jun. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments Derivative Positions and Offsetting Derivatives Designated as Hedging Instruments . Interest rate swaps allow the Company to change the fixed or variable nature of an interest rate without the exchange of the underlying notional amount. Certain pay fixed/receive variable interest rate swaps are designated as cash flow hedges to effectively convert variable-rate debt into fixed-rate debt, whereas certain receive fixed/pay variable interest rate swaps are designated as fair value hedges to effectively convert fixed-rate long-term debt into variable-rate debt. Certain purchased options are also designated as cash flow hedges. Purchased options allow the Company to limit the potential adverse impact of variable interest rates by establishing a cap rate or floor rate in exchange for an upfront premium. The purchased options designated as cash flow hedges represent interest rate caps where payment is received from the counterparty if interest rates rise above the cap rate, and interest rate floors where payment is received from the counterparty when interest rates fall below the floor rate. Derivatives Not Designated as Hedging Instruments. The Company also enters into other derivative transactions to manage economic risks, but does not designate the instruments in hedge relationships. In addition, the Company enters into derivative contracts to accommodate customer needs. Derivative contracts with customers are offset with dealer counterparty transactions structured with matching terms to ensure minimal impact on earnings. The following tables present the notional amounts and fair values, including accrued interest, of derivative positions: At June 30, 2023 Asset Derivatives Liability Derivatives (In thousands) Notional Amounts Fair Value Notional Amounts Fair Value Designated as hedging instruments: Interest rate derivatives (1) $ 1,000,000 $ 453 $ 4,750,000 $ 46,087 Not designated as hedging instruments: Interest rate derivatives (1) 7,322,980 375,350 7,329,236 387,261 Mortgage banking derivatives (2) 798 5 — — Other (3) 230,315 153 683,669 348 Total not designated as hedging instruments 7,554,093 375,508 8,012,905 387,609 Gross derivative instruments, before netting $ 8,554,093 375,961 $ 12,762,905 433,696 Less: Master netting agreements 52,273 52,273 Cash collateral 311,774 — Total derivative instruments, after netting $ 11,914 $ 381,423 At December 31, 2022 Asset Derivatives Liability Derivatives (In thousands) Notional Amounts Fair Value Notional Amounts Fair Value Designated as hedging instruments: Interest rate derivatives (1) $ 1,350,000 $ 1,515 $ 1,750,000 $ 9,632 Not designated as hedging instruments: Interest rate derivatives (1) 7,024,507 221,225 7,022,844 403,952 Mortgage banking derivatives (2) 3,283 32 — — Other (3) 161,934 134 606,478 915 Total not designated as hedging instruments 7,189,724 221,391 7,629,322 404,867 Gross derivative instruments, before netting $ 8,539,724 222,906 $ 9,379,322 414,499 Less: Master netting agreements 16,129 16,129 Cash collateral 184,095 — Total derivative instruments, after netting $ 22,682 $ 398,370 (1) Balances related to clearing houses are presented as a single unit of account. In accordance with their rule books, clearing houses legally characterize variation margin payments as settlement of derivatives rather than collateral against derivative positions. At June 30, 2023, and December 31, 2022, notional amounts of interest rate swaps cleared through clearing houses include $0.6 billion and $2.7 billion for asset derivatives, respectively, and $0.1 billion and zero for liability derivatives, respectively. The related fair values approximate zero. (2) Notional amounts related to residential loans exclude approved floating rate commitments of $4.1 million and $2.4 million at June 30, 2023, and December 31, 2022, respectively. (3) Other derivatives include foreign currency forward contracts related to lending arrangements, a Visa equity swap transaction, and risk participation agreements. Notional amounts of risk participation agreements include $201.7 million and $125.6 million for asset derivatives and $648.2 million and $559.2 million for liability derivatives at June 30, 2023, and December 31, 2022, respectively, which have insignificant related fair values. The following tables present fair value positions transitioned from gross to net upon applying counterparty netting agreements: At June 30, 2023 (In thousands) Gross Amount Recognized Derivative Offset Amount Cash Collateral Received/Pledged Net Amount Presented Amounts Not Offset Asset derivatives $ 370,140 $ 52,273 $ 311,774 $ 6,093 $ 6,112 Liability derivatives 52,273 52,273 — — 3,386 At December 31, 2022 (In thousands) Gross Amount Recognized Derivative Offset Amount Cash Collateral Received/Pledged Net Amount Presented Amounts Not Offset Asset derivatives $ 217,246 $ 16,129 $ 184,095 $ 17,022 $ 17,392 Liability derivatives 16,129 16,129 — — 1,545 Derivative Activity The following table summarizes the income statement effect of derivatives designated as hedging instruments: Recognized In Three months ended June 30, Six months ended June 30, (In thousands) Net Interest Income 2023 2022 2023 2022 Fair value hedges: Interest rate derivatives Deposits interest expense $ 10,928 $ — $ 693 $ — Hedged item Deposits interest expense (10,152) — 275 — Net recognized on fair value hedges $ (776) $ — $ (968) $ — Cash flow hedges: Interest rate derivatives Long-term debt interest expense $ 99 $ 77 $ 175 $ 153 Interest rate derivatives Interest and fees on loans and leases (724) 1,244 (1,460) 3,803 Net recognized on cash flow hedges $ (823) $ 1,167 $ (1,635) $ 3,650 The following table summarizes information related to fair value hedging adjustments: Condensed Consolidated Balance Sheet Line Item in Which Hedged Item is Located Carrying Amount of Hedged Item Cumulative Amount of Fair Value Hedging Adjustment Included in Carrying Amount (In thousands) At June 30, At December 31, At June 30, At December 31, Deposits $ 400,275 $ — $ 275 $ — Long-term debt (1) 330,781 333,458 30,781 33,458 (1) The Company de-designated its fair value hedging relationship on its long-term debt in 2020. The basis adjustment included in the carrying amount is being amortized into interest expense over the remaining life of the long-term debt. The following table summarizes the income statement effect of derivatives not designated as hedging instruments: Recognized In Three months ended June 30, Six months ended June 30, (In thousands) Non-interest Income 2023 2022 2023 2022 Interest rate derivatives Other income $ (194) $ 12,814 $ (3,881) $ 19,259 Mortgage banking derivatives Mortgage banking activities (12) (29) (28) (78) Other Other income (921) 1,027 (1,656) 1,424 Total not designated as hedging instruments $ (1,127) $ 13,812 $ (5,565) $ 20,605 Time-value premiums, which are amortized on a straight-line basis, are excluded from the assessment of hedge effectiveness for purchased options designated as cash flow hedges. At June 30, 2023, the remaining unamortized balance of time-value premiums was $1.4 million. Over the next twelve months, an estimated decrease to interest income of $34.4 million will be reclassified from AOCI relating to cash flow hedge gain/loss, and an estimated increase to interest expense of $0.2 million will be reclassified from AOCI relating to cash flow hedge terminations. At June 30, 2023, the remaining unamortized loss on terminated cash flow hedges was $0.2 million. The maximum length of time over which forecasted transactions are hedged is 4.7 years. Additional information regarding cash flow hedge activity impacting AOCI and the related amounts reclassified to net income can be found within Note 9: Accumulated Other Comprehensive (Loss) Income, Net of Tax. Derivative Exposure. At June 30, 2023, the Company had $4.6 million in initial margin collateral posted at clearing houses. In addition, $315.2 million of cash collateral received is included in Cash and due from banks on the accompanying Condensed Consolidated Balance Sheets. The Company regularly evaluates the credit risk of its derivative customers, taking into account the likelihood of default, net exposures, and remaining contractual life, among other related factors. Credit risk exposure is mitigated as transactions with customers are generally secured by the same collateral of the underlying transactions. Current net credit exposure relating to derivatives with the Bank's customers was $5.8 million at June 30, 2023. In addition, the Company monitors potential future exposure, representing its best estimate of exposure to remaining contractual maturity. The potential future exposure relating to derivatives with the Bank's customers totaled $101.8 million at June 30, 2023. The Company has incorporated a valuation adjustment to reflect non-performance risk in the fair value measurement of its derivatives, which totaled $6.6 million and $8.4 million at June 30, 2023, and December 31, 2022, respectively. Various factors impact changes in the valuation adjustment over time, such as changes in the credit spreads of the contracted parties, and changes in market rates and volatilities, which affect the total expected exposure of the derivative instruments.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
Fair Value Measurements	Jun. 30, 2023
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The determination of fair value may require the use of estimates when quoted market prices are not available. Fair value estimates made at a specific point in time are based on management’s judgments regarding future expected losses, current economic conditions, the risk characteristics of each financial instrument, and other subjective factors that cannot be determined with precision. The framework for measuring fair value provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The three levels within the fair value hierarchy are as follows: • Level 1: Inputs to the valuation methodology are unadjusted quoted prices for identical assets or liabilities in active markets that the Company has the ability to access at the measurement date. • Level 2: Inputs to the valuation methodology include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in inactive markets, inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, rate volatility, prepayment speeds, and credit ratings), or inputs that are derived principally from or corroborated by market data, correlation, or other means. • Level 3: Inputs to the valuation methodology are unobservable and significant to the fair value measurement. This includes certain pricing models or other similar techniques that require significant management judgment or estimation. Assets and Liabilities Measured at Fair Value on a Recurring Basis Available-for-Sale Securities. When unadjusted quoted prices are available in an active market, the Company classifies its available-for-sale investment securities within Level 1 of the fair value hierarchy. U.S. Treasury notes have a readily determinable fair value, and accordingly, are classified within Level 1 of the fair value hierarchy. When quoted market prices are not available, the Company employs an independent pricing service that utilizes matrix pricing to calculate fair value. These fair value measurements consider observable data, such as dealer quotes, market spreads, cash flows, yield curves, live trading levels, trade execution data, market consensus prepayments speeds, credit information, and the respective terms and conditions for debt instruments. Management maintains procedures to monitor the pricing service's results and has a process in place to challenge their valuations and methodologies that appear unusual or unexpected. Government agency debentures, Municipal bonds and notes, Agency CMO, Agency MBS, Agency CMBS, CMBS, CLO, Corporate debt, Private label MBS, and Other available-for-sale securities are classified within Level 2 of the fair value hierarchy. Derivative Instruments. The fair values presented for derivative instruments include any accrued interest. Foreign exchange contracts are valued based on unadjusted quoted prices in active markets, and accordingly, are classified within Level 1 of the fair value hierarchy. Except for mortgage banking derivatives, all other derivative instruments are valued using third-party valuation software, which considers the present value of cash flows discounted using observable forward rate assumptions. The resulting fair value is then validated against valuations performed by independent third parties. These derivative instruments are classified within Level 2 of the fair value hierarchy. Mortgage Banking Derivatives. The Company uses forward sales of mortgage loans and mortgage-backed securities to manage the risk of loss associated with its mortgage loan commitments and mortgage loans held for sale. Prior to closing and funding certain single-family residential mortgage loans, an interest rate lock commitment is generally extended to the borrower. During this in-between time period, the Company is subject to the risk that market interest rates may change. If rates rise, investors generally will pay less to purchase mortgage loans, which would result in a reduction in the gain on sale of the loans, or possibly a loss. In an effort to mitigate this risk, forward delivery sales commitments are established in which the Company agrees to either deliver whole mortgage loans to various investors or issue mortgage-backed securities. The fair value of mortgage banking derivatives is determined based on current market prices for similar assets in the secondary market. Accordingly, mortgage banking derivatives are classified within Level 2 of the fair value hierarchy. Originated Loans Held For Sale. The Company has elected to measure originated loans held for sale at fair value under the fair value option per ASC Topic 825, Financial Instruments. Electing to measure originated loans held for sale at fair value reduces certain timing differences and better reflects the price the Company would expect to receive from the sale of these loans. The fair value of originated loans held for sale is based on quoted market prices of similar loans sold in conjunction with securitization transactions. Accordingly, originated loans held for sale are classified within Level 2 of the fair value hierarchy. The following table compares the fair value to the unpaid principal balance of originated loans held for sale: At June 30, 2023 At December 31, 2022 (In thousands) Fair Value Unpaid Principal Balance Difference Fair Value Unpaid Principal Balance Difference Originated loans held for sale $ 1,800 $ 1,322 $ 478 $ 1,991 $ 1,631 $ 360 Rabbi Trust Investments. Investments held in each of the Company's Rabbi Trusts consist primarily of mutual funds that invest in equity and fixed income securities. Shares of these mutual funds are valued based on the NAV as reported by the trustee of the funds, which represents quoted prices in active markets. The Company has elected to measure the Rabbi Trusts' investments at fair value. Accordingly, the Rabbi Trusts' investments are classified within Level 1 of the fair value hierarchy. At June 30, 2023, and December 31, 2022, the total cost basis of the investments held in the Rabbi Trusts was $10.2 million and $10.0 million, respectively. Alternative Investments. Equity investments have a readily determinable fair value when unadjusted quoted prices are available in an active market for identical assets. Accordingly, these alternative investments are classified within Level 1 of the fair value hierarchy. At June 30, 2023, and December 31, 2022, equity investments with a readily determinable fair value had a total carrying amount of $0.6 million and $0.4 million, respectively, with no remaining unfunded commitment. During the three and six months ended June 30, 2023, there were total write-ups in fair value of $0.1 million and $0.2 million, respectively, associated with these alternative investments. Equity investments that do not have a readily determinable fair value may qualify for the NAV practical expedient if they meet certain requirements. The Company's alternative investments measured at NAV consist of investments in non-public entities that cannot be redeemed since investments are distributed as the underlying equity is liquidated. Alternative investments measured at NAV are not classified within the fair value hierarchy. At June 30, 2023, and December 31, 2022, these alternative investments had a total carrying amount of $28.5 million and $89.2 million, respectively, and a remaining unfunded commitment of $27.0 million and $82.7 million, respectively. Contingent Consideration. The Company recorded $16.0 million of contingent consideration at fair value related to two earn-out agreements associated with the acquisition of interLINK on January 11, 2023. The terms of the purchase agreement specified that the seller would receive earn-outs based on the ability of the Company to: (i) re-sign the existing broker dealers under contract, and (ii) generate $2.5 billion in new broker dealer deposit programs within three years of the acquisition date. The estimated fair values of the contingent consideration liabilities are measured on a recurring basis and determined using an income approach considering management’s evaluation of the probability of achievement, forecasted achievement date (payment term), and a discount rate equivalent to the counterparty cost of debt. These significant inputs, which are the responsibility of management and were initially calculated with the assistance of a third-party valuation specialist, are not observable and accordingly, are classified within Level 3 of the fair value hierarchy. The following table summarizes the unobservable inputs used to derive the estimated fair value of the Company’s contingent consideration liabilities at June 30, 2023 (dollars in thousands): Agreement Maximum Amount Probability of Achievement Payment Term Discount Rate Fair Value (i) Re-sign broker dealers $ 4,826 99.0 % 0.22 5.50 % $ 4,798 (ii) Deposit program growth $ 12,500 100.0 % 1.97 5.50 % $ 11,241 Contingent consideration liabilities are included within Accrued expenses and other liabilities on the accompanying Condensed Consolidated Balance Sheets. Any fair value adjustments to contingent consideration liabilities are included in Other expense on the accompanying Condensed Consolidated Statements of Income. The following tables summarize the fair values of assets and liabilities measured at fair value on a recurring basis: At June 30, 2023 (In thousands) Level 1 Level 2 Level 3 Total Financial Assets: Available-for-sale securities: U.S. Treasury notes $ 384,067 $ — $ — $ 384,067 Government agency debentures — 261,101 — 261,101 Municipal bonds and notes — 1,604,150 — 1,604,150 Agency CMO — 53,360 — 53,360 Agency MBS — 2,184,907 — 2,184,907 Agency CMBS — 1,734,922 — 1,734,922 CMBS — 876,119 — 876,119 Corporate debt — 608,759 — 608,759 Private label MBS — 43,050 — 43,050 Other — 8,906 — 8,906 Total available-for-sale securities 384,067 7,375,274 — 7,759,341 Gross derivative instruments, before netting (1) 67 375,894 — 375,961 Originated loans held for sale — 1,800 — 1,800 Investments held in Rabbi Trusts 12,347 — — 12,347 Alternative investments (2) 567 — — 29,023 Total financial assets $ 397,048 $ 7,752,968 $ — $ 8,178,472 Financial Liabilities: Gross derivative instruments, before netting (1) $ 262 $ 433,434 $ — $ 433,696 Contingent consideration — — 16,039 16,039 Total financial liabilities $ 262 $ 433,434 $ 16,039 $ 449,735 At December 31, 2022 (In thousands) Level 1 Level 2 Level 3 Total Financial Assets: Available-for-sale securities: U.S. Treasury notes $ 717,040 $ — $ — $ 717,040 Government agency debentures — 258,374 — 258,374 Municipal bonds and notes — 1,633,202 — 1,633,202 Agency CMO — 59,965 — 59,965 Agency MBS — 2,158,024 — 2,158,024 Agency CMBS — 1,406,486 — 1,406,486 CMBS — 896,640 — 896,640 CLO — 2,107 — 2,107 Corporate debt — 704,412 — 704,412 Private label MBS — 44,249 — 44,249 Other — 12,198 — 12,198 Total available-for-sale securities 717,040 7,175,657 — 7,892,697 Gross derivative instruments, before netting (1) 79 222,827 — 222,906 Originated loans held for sale — 1,991 — 1,991 Investments held in Rabbi Trusts 12,103 — — 12,103 Alternative investments (2) 430 — — 89,678 Total financial assets $ 729,652 $ 7,400,475 $ — $ 8,219,375 Financial Liabilities: Gross derivative instruments, before netting (1) $ 843 $ 413,656 $ — $ 414,499 (1) Additional information regarding the impact of netting derivative assets and derivative liabilities, as well as the impact from offsetting cash collateral paid to the same derivative counterparties, can be found within Note 13: Derivative Financial Instruments. (2) Certain alternative investments are recorded at NAV. Assets measured at NAV are not classified within the fair value hierarchy. Assets Measured at Fair Value on a Non-Recurring Basis The Company measures certain assets at fair value on a non-recurring basis. The following is a description of the valuation methodologies used for assets measured at fair value on a non-recurring basis. Alternative Investments. The measurement alternative has been elected for alternative investments without readily determinable fair values that do not qualify for the NAV practical expedient. The measurement alternative requires investments to be measured at cost minus impairment, if any, plus or minus adjustments resulting from observable price changes in orderly transactions for an identical or similar investment of the same issuer. Accordingly, these alternative investments are classified within Level 2 of the fair value hierarchy. At June 30, 2023, and December 31, 2022, the carrying amount of these alternative investments was $48.4 million and $42.8 million, respectively, of which $1.9 million and $5.9 million, respectively, were considered to be measured at fair value. During the three and six months ended June 30, 2023, there were $0.3 million in total write-ups due to observable price changes, and zero write-downs due to impairment. Loans Transferred to Held for Sale. Once a decision has been made to sell loans not previously classified as held for sale, these loans are transferred into the held for sale category and carried at the lower of cost or fair value, less estimated costs to sell. At the time of transfer into held for sale classification, any amount by which cost exceeds fair value is accounted for as a valuation allowance. This activity generally pertains to loans with observable inputs, and therefore, are classified within Level 2 of the fair value hierarchy. However, should these loans include adjustments for changes in loan characteristics based on unobservable inputs, the loans would then be classified within Level 3 of the fair value hierarchy. At June 30, 2023, and December 31, 2022, there were $9.2 million and zero loans that were transferred to held for sale on the Condensed Consolidated Balance Sheet. Collateral Dependent Loans and Leases. Loans and leases for which repayment is substantially expected to be provided through the operation or sale of collateral are considered collateral dependent, and are valued based on the estimated fair value of the collateral, less estimated costs to sell at the reporting date, using customized discounting criteria. Accordingly, collateral dependent loans and leases are classified within Level 3 of the fair value hierarchy. Other Real Estate Owned and Repossessed Assets. OREO and repossessed assets are held at the lower of cost or fair value and are considered to be measured at fair value when recorded below cost. The fair value of OREO is calculated using independent appraisals or internal valuation methods, less estimated selling costs, and may consider available pricing guides, auction results, and price opinions. Certain repossessed assets may also require assumptions about factors that are not observable in an active market when determining fair value. Accordingly, OREO and repossessed assets are classified within Level 3 of the fair value hierarchy. At June 30, 2023, and December 31, 2022, the total book value of OREO and repossessed assets was $3.3 million and $2.3 million, respectively. In addition, the amortized cost of consumer loans secured by residential real estate property that were in process of foreclosure at June 30, 2023, was $21.5 million. Estimated Fair Values of Financial Instruments and Mortgage Servicing Assets The Company is required to disclose the estimated fair values of certain financial instruments and mortgage servicing rights. The following is a description of the valuation methodologies used to estimate fair value for those assets and liabilities. Cash and Cash Equivalents . Given the short time frame to maturity, the carrying amount of cash and cash equivalents, which comprises cash and due from banks and interest-bearing deposits, approximates fair value. Cash and cash equivalents are classified within Level 1 of the fair value hierarchy. Held-to-Maturity Securities . When quoted market prices are not available, the Company employs an independent pricing service that utilizes matrix pricing to calculate fair value. These fair value measurements consider observable data, such as dealer quotes, market spreads, cash flows, yield curves, live trading levels, trade execution data, market consensus prepayment speeds, credit information, and the respective terms and conditions for debt instruments. Management maintains procedures to monitor the pricing service's results and has a process in place to challenge their valuations and methodologies that appear unusual or unexpected. Held-to-maturity securities, which include Agency CMO, Agency MBS, Agency CMBS, Municipal bonds and notes, and CMBS, are classified within Level 2 of the fair value hierarchy. Loans and Leases, net . Except for collateral dependent loans and leases, the fair value of loans and leases held for investment is estimated using a discounted cash flow methodology, based on future prepayments and market interest rates inclusive of an illiquidity premium for comparable loans and leases. The associated cash flows are then adjusted for associated credit risks and other potential losses, as appropriate. Loans and leases are classified within Level 3 of the fair value hierarchy. Mortgage Servicing Rights . Mortgage servicing rights are initially measured at fair value and subsequently measured using the amortization method. The Company assesses mortgage servicing rights for impairment each quarter and establishes or adjusts the valuation allowance to the extent that amortized cost exceeds the estimated fair market value. Fair value is calculated as the present value of estimated future net servicing income and relies on market based assumptions for loan prepayment speeds, servicing costs, discount rates, and other economic factors. Accordingly, the primary risk inherent in valuing mortgage servicing rights is the impact of fluctuating interest rates on the related servicing revenue stream. Mortgage servicing rights are classified within Level 3 of the fair value hierarchy. Deposit Liabilities . The fair value of deposit liabilities, which comprises demand deposits, interest-bearing checking, savings, health savings, and money market accounts, reflects the amount payable on demand at the reporting date. Deposit liabilities are classified within Level 2 of the fair value hierarchy. Time Deposits . The fair value of fixed-maturity certificates of deposit is estimated using rates that are currently offered for deposits with similar remaining maturities. Time deposits are classified within Level 2 of the fair value hierarchy. Securities Sold Under Agreements to Repurchase and Other Borrowings . The fair value of securities sold under agreements to repurchase and other borrowings that mature within 90 days approximates their carrying value. The fair value of securities sold under agreements to repurchase and other borrowings that mature after 90 days is estimated using a discounted cash flow methodology based on current market rates and adjusted for associated credit risks, as appropriate. Securities sold under agreements to repurchase and other borrowings are classified within Level 2 of the fair value hierarchy. Federal Home Loan Bank Advances and Long-Term Debt . The fair value of FHLB advances and long-term debt is estimated using a discounted cash flow methodology in which discount rates are matched with the time period of the expected cash flows and adjusted for associated credit risks, as appropriate. FHLB advances and long-term debt are classified within Level 2 of the fair value hierarchy. The following table summarizes the carrying amounts, estimated fair values, and classifications within the fair value hierarchy of selected financial instruments and mortgage servicing rights: At June 30, 2023 At December 31, 2022 (In thousands) Carrying Fair Carrying Fair Assets: Level 1 Cash and cash equivalents $ 1,360,759 $ 1,360,759 $ 839,943 $ 839,943 Level 2 Held-to-maturity investment securities 6,943,784 6,066,682 6,564,697 5,761,453 Level 3 Loans and leases, net 50,997,137 49,027,570 49,169,685 47,604,463 Mortgage servicing assets 8,858 25,520 9,515 27,043 Liabilities: Level 2 Deposit liabilities $ 51,461,474 $ 51,461,474 $ 49,893,391 $ 49,893,391 Time deposits 7,286,058 7,189,837 4,160,949 4,091,979 Securities sold under agreements to repurchase and other borrowings 243,580 243,548 1,151,830 1,151,797 FHLB advances 4,310,371 4,310,259 5,460,552 5,459,218 Long-term debt (1) 1,052,258 971,751 1,073,128 1,001,779

Retirement Benefit Plans

Retirement Benefit Plans	6 Months Ended
Retirement Benefit Plans	Jun. 30, 2023
Retirement Benefits [Abstract]
Retirement Benefit Plans	Retirement Benefit Plans Defined Benefit Pension and Other Postretirement Benefits The following tables summarize the components of net periodic benefit cost (income): Three months ended June 30, 2023 2022 (In thousands) Pension SERP OPEB Pension SERP OPEB Service cost $ — $ — $ 7 $ — $ — $ 9 Interest cost 2,211 47 263 1,380 17 213 Expected return on plan assets (2,699) — — (3,668) — — Amortization of actuarial loss (gain) 1,216 2 (677) 423 6 (19) Net periodic benefit cost (income) $ 728 $ 49 $ (407) $ (1,865) $ 23 $ 203 Six months ended June 30, 2023 2022 (In thousands) Pension SERP OPEB Pension SERP OPEB Service cost $ — $ — $ 14 $ — $ — $ 15 Interest cost 4,422 114 643 2,757 32 357 Expected return on plan assets (5,398) — — (7,337) — — Amortization of actuarial loss (gain) 2,432 3 (1,352) 845 13 (37) Net periodic benefit cost (income) $ 1,456 $ 117 $ (695) $ (3,735) $ 45 $ 335 The components of net periodic benefit cost (income) are included in Other expense on the accompanying Condensed Consolidated Statements of Income. The weighted-average expected long-term rate of return on plan assets for the three and six months ended June 30, 2023, was 5.50%, as determined at the beginning of the year.

Segment Reporting

Segment Reporting	6 Months Ended
Segment Reporting	Jun. 30, 2023
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting The Company's operations are organized into three reportable segments that represent its primary businesses: Commercial Banking, HSA Bank, and Consumer Banking. These segments reflect how executive management responsibilities are assigned, how discrete financial information is evaluated, the type of customer served, and how products and services are provided. Certain Treasury activities, including the operations of interLINK, along with the amounts required to reconcile profitability metrics to those reported in accordance with GAAP, are included in the Corporate and Reconciling category. In connection with the acquisition of interLINK on January 11, 2023, the $143.2 million of goodwill recorded was allocated entirely to Commercial Banking. In addition, as previously discussed in Note 2: Mergers and Acquisitions and Segment Reporting Methodology The Company uses an internal profitability reporting system to generate information by reportable segment, which is based on a series of management estimates for funds transfer pricing, and allocations for non-interest expense, provision for credit losses, income taxes, and equity capital. These estimates and allocations, certain of which are subjective in nature, are periodically reviewed and refined. Changes in estimates and allocations that affect the results of any reportable segment do not affect the consolidated financial position or results of operations of the Company as a whole. The full profitability measurement reports, which are prepared for each reportable segment, reflect non-GAAP reporting methodologies. The differences between full profitability and GAAP results are reconciled in the Corporate and Reconciling category. The Company allocates interest income and interest expense to each business through an internal matched maturity FTP process. The goal of the FTP allocation is to encourage loan and deposit growth consistent with the Company’s overall profitability objectives. The FTP process considers the specific interest rate risk and liquidity risk of financial instruments and other assets and liabilities in each line of business. Loans are assigned an FTP rate for funds used and deposits are assigned an FTP rate for funds provided. The allocation considers the origination date and the earlier of the maturity date or the repricing date of a financial instrument to assign an FTP rate for loans and deposits originated each day. The FTP process transfers the corporate interest rate risk exposure to the Treasury function included within the Corporate and Reconciling category where such exposures are centrally managed. The Company allocates a majority of non-interest expense to each reportable segment using an activity and driver-based costing process. Costs, including shared services and back-office support areas, are analyzed, pooled by process, and assigned to the appropriate reportable segment. The combination of direct revenue, direct expenses, funds transfer pricing, and allocations of non-interest expense produces PPNR, which is the basis the segments are reviewed by executive management. The Company also allocates the provision for credit losses to each reportable segment based on management's estimate of the expected loss content in each of the specific loan and lease portfolios. The ACL on loans and leases is included in total assets within the Corporate and Reconciling category. Business development expenses, such as merger-related and strategic initiatives costs, are also generally included in the Corporate and Reconciling category. The following tables present balance sheet information, including the appropriate allocations, for the Company's reportable segments and the Corporate and Reconciling category: At June 30, 2023 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Reconciling Consolidated Total Goodwill $ 2,029,204 $ 57,485 $ 544,776 $ — $ 2,631,465 Total assets 46,426,949 120,295 10,725,344 16,765,655 74,038,243 At December 31, 2022 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Reconciling Consolidated Total Goodwill $ 1,904,291 $ 57,779 $ 552,034 $ — $ 2,514,104 Total assets 44,380,582 122,729 10,625,334 16,148,876 71,277,521 The following tables present operating results, including the appropriate allocations, for the Company’s reportable segments and the Corporate and Reconciling category: Three months ended June 30, 2023 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Reconciling Consolidated Total Net interest income $ 383,606 $ 75,421 $ 204,455 $ (79,653) $ 583,829 Non-interest income 32,255 23,023 28,877 5,219 89,374 Non-interest expense 110,582 42,643 108,880 81,984 344,089 Pre-tax, pre-provision net revenue 305,279 55,801 124,452 (156,418) 329,114 Provision for credit losses 34,480 — 769 (3,751) 31,498 Income before income taxes 270,799 55,801 123,683 (152,667) 297,616 Income tax expense 67,971 15,066 32,652 (53,041) 62,648 Net income $ 202,828 $ 40,735 $ 91,031 $ (99,626) $ 234,968 Three months ended June 30, 2022 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Reconciling Consolidated Total Net interest income $ 333,421 $ 49,558 $ 179,287 $ (75,606) $ 486,660 Non-interest income 49,430 26,552 30,798 14,153 120,933 Non-interest expense 102,720 37,540 107,366 110,601 358,227 Pre-tax, pre-provision net revenue 280,131 38,570 102,719 (172,054) 249,366 Provision (benefit) for credit losses 22,782 — (11,053) 514 12,243 Income before income taxes 257,349 38,570 113,772 (172,568) 237,123 Income tax expense 64,337 10,337 29,581 (49,443) 54,812 Net income $ 193,012 $ 28,233 $ 84,191 $ (123,125) $ 182,311 Six months ended June 30, 2023 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Reconciling Consolidated Total Net interest income $ 767,920 $ 147,151 $ 415,038 $ (150,997) $ 1,179,112 Non-interest income 67,652 47,090 54,836 (9,438) 160,140 Non-interest expense 219,091 86,343 215,759 155,363 $ 676,556 Pre-tax, pre-provision net revenue 616,481 $ 107,898 254,115 (315,798) 662,696 Provision for credit losses 70,517 — 2,553 5,177 78,247 Income before income tax expense 545,964 107,898 251,562 (320,975) 584,449 Income tax expense 137,037 29,132 66,412 (104,104) 128,477 Net income $ 408,927 $ 78,766 $ 185,150 $ (216,871) $ 455,972 Six months ended June 30, 2022 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Reconciling Consolidated Total Net interest income $ 620,490 $ 94,135 $ 315,964 $ (149,681) $ 880,908 Non-interest income 88,173 53,510 58,699 24,586 224,968 Non-interest expense 191,960 73,949 202,876 249,227 718,012 Pre-tax, pre-provision net revenue 516,703 73,696 171,787 (374,322) 387,864 Provision (benefit) for credit losses 204,713 — (3,917) 292 201,088 Income before income tax expense 311,990 73,696 175,704 (374,614) 186,776 Income tax expense 74,392 19,751 45,634 (118,565) 21,212 Net income $ 237,598 $ 53,945 $ 130,070 $ (256,049) $ 165,564

Revenue from Contracts with Cus

Revenue from Contracts with Customers	6 Months Ended
Revenue from Contracts with Customers	Jun. 30, 2023
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	Revenue from Contracts with Customers The following tables summarize revenues recognized in accordance with ASC Topic 606, Revenue from Contracts with Customers. These disaggregated amounts, together with sources of other non-interest income that are subject to other GAAP topics, have been reconciled to non-interest income by reportable segment as presented within Note 16: Segment Reporting. Three months ended June 30, 2023 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Consolidated Non-interest Income: Deposit service fees $ 5,582 $ 20,986 $ 19,181 $ (331) $ 45,418 Loan and lease related fees (1) 4,323 — — — 4,323 Wealth and investment services (2) 2,873 — 4,525 (7) 7,391 Other income — 2,037 1,198 1,122 4,357 Revenue from contracts with customers 12,778 23,023 24,904 784 61,489 Other sources of non-interest income 19,477 — 3,973 4,435 27,885 Total non-interest income $ 32,255 $ 23,023 $ 28,877 $ 5,219 $ 89,374 Three months ended June 30, 2022 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Consolidated Non-interest Income: Deposit service fees $ 7,647 $ 24,949 $ 18,366 $ 423 $ 51,385 Loan and lease related fees (1) 6,077 — — — 6,077 Wealth and investment services 2,770 — 8,479 (5) 11,244 Other income — 1,603 285 — 1,888 Revenue from contracts with customers 16,494 26,552 27,130 418 70,594 Other sources of non-interest income 32,936 — 3,668 13,735 50,339 Total non-interest income $ 49,430 $ 26,552 $ 30,798 $ 14,153 $ 120,933 Six months ended June 30, 2023 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Consolidated Non-interest Income: Deposit service fees $ 10,972 $ 43,078 $ 37,205 $ (401) $ 90,854 Loan and lease related fees (1) 8,750 — — — 8,750 Wealth and investment services (2) 5,640 — 8,353 (15) 13,978 Other income — 4,012 1,556 2,054 7,622 Revenue from contracts with customers 25,362 47,090 47,114 1,638 121,204 Other sources of non-interest income 42,290 — 7,722 (11,076) 38,936 Total non-interest income $ 67,652 $ 47,090 $ 54,836 $ (9,438) $ 160,140 Six months ended June 30, 2022 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Consolidated Non-interest Income: Deposit service fees $ 14,332 $ 50,083 $ 34,329 $ 468 $ 99,212 Loan and lease related fees (1) 10,575 — — — 10,575 Wealth and investment services 5,904 — 15,950 (13) 21,841 Other income — 3,427 670 — 4,097 Revenue from contracts with customers 30,811 53,510 50,949 455 135,725 Other sources of non-interest income 57,362 — 7,750 24,131 89,243 Total non-interest income $ 88,173 $ 53,510 $ 58,699 $ 24,586 $ 224,968 (1) A portion of loan and lease related fees comprises income generated from factored receivables and payroll financing activities that is within the scope of ASC Topic 606. (2) Effective as of the fourth quarter of 2022, the wealth and investment services revenue stream was impacted by the restructuring of a process in which the Company offers brokerage, investment advisory, and certain insurance-related services to customers. The staff providing these services, who had previously been employees of the Bank, are now employees of a third-party service provider. As a result, the Company now recognizes income from this program on a net basis, which thereby reduces gross reported wealth and investment services non-interest income and the related compensation and benefits non-interest expense on the accompanying Condensed Consolidated Statements of Income. Contracts with customers did not generate significant contract assets and liabilities at June 30, 2023, or December 31, 2022. Major Revenue Streams Deposit service fees consist of fees earned from commercial and consumer customer deposit accounts, such as account maintenance and cash management/analysis fees, as well as other transactional service charges (i.e., insufficient funds, wire transfers, stop payment fees, etc.). Performance obligations for account maintenance services and cash management/analysis fees are satisfied on a monthly basis at a fixed transaction price, whereas performance obligations for other deposit service charges that result from various customer-initiated transactions are satisfied at a point-in-time when the service is rendered. Payment for deposit service fees is generally received immediately or in the following month through a direct charge to the customers' accounts. Certain commercial customer contracts include credit clauses, whereby the Company will grant credit upon the customer meeting pre-determined conditions, which can be used to offset fees. On occasion, the Company may also waive certain fees. Fee waivers are recognized as a reduction to revenue in the period the waiver is granted to the customer. The deposit service fees revenue stream also includes interchange fees earned from debit and credit card transactions. The transaction price for interchange services is based on the transaction value and the interchange rate set by the card network. Performance obligations for interchange fees are satisfied at a point-in-time when the cardholder's transaction is authorized and settled. Payment for interchange fees is generally received immediately or in the following month. Factored receivables non-interest income consists of fees earned from accounts receivable management services. The Company factors accounts receivable, with and without recourse, for customers whereby the Company purchases their accounts receivable at a discount and assumes the risk, as applicable, and ownership of the assets through direct cash receipt from the end consumer. Factoring services are performed in exchange for a non-refundable fee at a transaction price based on a percentage of the gross invoice amount of each receivable purchased, subject to a minimum required amount. The performance obligation for factoring services is generally satisfied at a point-in-time when the receivable is assigned to the Company. However, should the commission earned not meet or exceed the minimum required annual amount, the difference between that and the actual amount is recognized at the end of the contract term. Other fees associated with factoring receivables may include wire transfer and technology fees, field examination fees, and Uniform Commercial Code fees, where the performance obligations are satisfied at a point-in-time when the services are rendered. Payment from the customer for factoring services is generally received immediately or within the following month. Payroll finance non-interest income consists of fees earned from performing payroll financing and business process outsourcing services, including full back-office technology and tax accounting services, along with payroll preparation, making payroll tax payments, invoice billings, and collections for independently-owned temporary staffing companies nationwide. Performance obligations for payroll finance and business processing activities are either satisfied upon completion of the support services or as payroll remittances are made on behalf of customers to fund their employee payroll, which generally occurs on a weekly basis. The agreed-upon transaction price is based on a fixed-percentage per the terms of the contract, which could be subject to a hold-back reserve to provide for any balances that are assessed to be at risk of collection. When the Company collects on amounts due from end consumers on behalf of its customers and at the time of financing payroll, the Company retains the agreed-upon transaction price payable for the performance of its services and remits an amount to the customer net of any advances and payroll tax withholdings, as applicable. Wealth and investment services consist of fees earned from asset management, trust administration, and investment advisory services, and through facilitating securities transactions. Performance obligations for asset management and trust administration services are satisfied on a monthly or quarterly basis at a transaction price based on a percentage of the period-end market value of the assets under administration. Payment for asset management and trust administration services is generally received a few days after period-end through a direct charge to the customers' accounts. Performance obligations for investment advisory services are satisfied over the period in which the services are provided through a time-based measurement of progress, and the agreed-upon transaction price with the customer varies depending on the nature of the services performed. Performance obligations for facilitating securities transactions are satisfied at a point-in-time when the securities are sold at a transaction price that is based on a percentage of the contract value. Payment for both investment advisory services and facilitating securities transactions may be received in advance of the service, but generally is received immediately or in the following period, in arrears.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
Commitments and Contingencies	Jun. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Credit-Related Financial Instruments In the normal course of business, the Company offers financial instruments with off-balance sheet risk to meet the financing needs of its customers. These transactions include commitments to extend credit, standby letters of credit, and commercial letters of credit, which involve, to varying degrees, elements of credit risk. The following table summarizes the outstanding amounts of credit-related financial instruments with off-balance sheet risk: (In thousands) At June 30, At December 31, 2022 Commitments to extend credit $ 10,706,088 $ 11,237,496 Standby letters of credit 426,658 380,655 Commercial letters of credit 54,196 53,512 Total credit-related financial instruments with off-balance sheet risk $ 11,186,942 $ 11,671,663 The Company enters into contractual commitments to extend credit to its customers (i.e., revolving credit arrangements, term loan commitments, and short-term borrowing agreements), generally with fixed expiration dates or other termination clauses and that require payment of a fee. Substantially all of the Company's commitments to extend credit are contingent upon its customers maintaining specific credit standards at the time of loan funding, and are often secured by real estate collateral. Since the majority of the Company's commitments typically expire without being funded, the total contractual amount does not necessarily represent the Company's future payment requirements. Standby letters of credit are written conditional commitments issued by the Company to guarantee its customers' performance to a third party. In the event the customer does not perform in accordance with the terms of its agreement with a third-party, the Company would be required to fund the commitment. The contractual amount of each standby letter of credit represents the maximum amount of potential future payments the Company could be required to make. Historically, the majority of the Company's standby letters of credit expire without being funded. However, if the commitment were funded, the Company has recourse against the customer. The Company's standby letter of credit agreements are often secured by cash or other collateral. Commercial letters of credit are issued to finance either domestic or foreign customer trade arrangements. As a general rule, drafts are committed to be drawn when the goods underlying the transaction are in transit. Similar to standby letters of credit, the Company's commercial letter of credit agreements are often secured by the underlying goods subject to trade. Allowance for Credit Losses on Unfunded Loan Commitments An ACL is recorded under the CECL methodology and included in Accrued expenses and other liabilities on the accompanying Condensed Consolidated Balance Sheets to provide for the unused portion of commitments to lend that are not unconditionally cancellable by the Company. At June 30, 2023, and December 31, 2022, the ACL on unfunded loan commitments totaled $22.4 million and $27.7 million, respectively. Litigation The Company is subject to certain legal proceedings and unasserted claims and assessments in the ordinary course of business. Legal contingencies are evaluated based on information currently available, including advice of counsel and assessment of available insurance coverage. The Company establishes an accrual for specific legal matters when it determines that the likelihood of an unfavorable outcome is probable and the loss is reasonably estimable. Once established, each accrual is adjusted to reflect any subsequent developments. Legal contingencies are subject to inherent uncertainties, and unfavorable rulings may occur that could cause the Company to either adjust its litigation accrual or incur actual losses that exceed the current estimate, which ultimately could have a material adverse effect, either individually or in the aggregate, on its business, financial condition, or operating results. The Company will consider settlement of cases when it is in the best interests of the Company and its stakeholders. The Company intends to defend itself in all claims asserted against it, and management currently believes that the outcome of these contingencies will not be material, either individually or in the aggregate, to the Company or its consolidated financial position. Federal Deposit Insurance Corporation Special Assessment On May 22, 2023, the FDIC published a proposed rule to charge certain banks a special assessment to recover losses incurred by protecting uninsured depositors of Silicon Valley Bank and Signature Bank upon their failure in March 2023. The proposed rule would levy a special assessment to certain banks at an annual rate of 12.5 basis points based on their uninsured deposits balance as of December 31, 2022, payable in eight quarterly installments beginning in the first quarter of 2024. Based on the proposed rule, the Company estimates that its total special assessment charge would be approximately $44.0 million. The FDIC has the authority to make further changes to the proposed rule before finalization, including changes to the underlying data and calculation methodology used to determine the special assessment. The comment period on the proposed rule expired on July 21, 2023, and no final rule has been published in the Federal Register as of the date of this Quarterly Report on Form 10-Q. Accordingly, no legal obligation has been incurred, and therefore, no accrual has been recognized.

Subsequent Events

Subsequent Events	6 Months Ended
Subsequent Events	Jun. 30, 2023
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventsThe Company has evaluated subsequent events from the date of the Condensed Consolidated Financial Statements, and accompanying Notes thereto, through the date of issuance, and determined that no significant events were identified requiring recognition or disclosure.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Pay vs Performance Disclosure
Net income	$ 234,968	$ 182,311	$ 455,972	$ 165,564

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Jun. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	6 Months Ended
Summary of Significant Accounting Policies (Policies)	Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The unaudited Condensed Consolidated Financial Statements of the Company have been prepared in accordance with GAAP for interim financial information and Article 10 of Regulation S-X. Certain information and footnote disclosures required by GAAP for complete financial statements have been omitted or condensed. Therefore, the condensed consolidated financial statements should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 31, 2022. The results of operations for the six months ended June 30, 2023, are not necessarily indicative of the future results that may be attained for the entire year or other interim periods. In the opinion of management, all necessary adjustments have been reflected to present fairly the financial position, results of operations, and cash flows for the reporting periods presented. Intercompany transactions and balances have been eliminated in consolidation. Assets under administration or assets under management that the Company holds or manages in a fiduciary or agency capacity for customers are not included in the Condensed Consolidated Financial Statements.
Use of Estimates	Use of Estimates The preparation of the Condensed Consolidated Financial Statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the Condensed Consolidated Financial Statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Relevant Accounting Standards Issued But Not Yet Adopted	Accounting Standards Adopted in the Current Period ASU No. 2022-02—Financial Instruments—Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures In March 2022, the FASB issued ASU No. 2022-02, which eliminates the accounting guidance for TDRs by creditors in Subtopic 310-40, Receivables—Troubled Debt Restructurings by Creditors, while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty. Specifically, rather than applying the recognition and measurement guidance for TDRs, an entity must apply the loan refinancing and restructuring guidance in paragraphs 310-20-35-9 through 35-11 to determine whether a modification results in a new loan or a continuation of an existing loan. In addition, the Update requires that an entity disclose current-period gross write-offs by year of origination for financing receivables and net investments in leases within the scope of Subtopic 326-20, Financial Instruments—Credit Losses—Measured at Amortized Cost in the vintage disclosures required by paragraph 326-20-50-6. Modifications to borrowers experiencing financial difficulty include principal forgiveness, interest rate reductions, payment delays, term extensions, or combinations thereof. Expected losses or recoveries on loans where modifications have been granted to borrowers experiencing financial difficulty have been factored into the ACL on loans and leases. Upon adoption of ASU 2022-02, the Company is no longer required to use a discounted cash flow (or reconcilable) method to measure the ACL resulting from a modification with a borrower experiencing financial difficulty. Accordingly, the Company now applies the same credit loss methodology it uses for similar loans that were not modified. The Company adopted the Update on January 1, 2023. The Company elected the option to apply the modified retrospective transition method related to the recognition and measurement of TDRs, which resulted in a $5.9 million increase to the Allowance for Credit Losses on Loans and Leases and a $1.7 million decrease to Deferred Tax Assets, net, with a corresponding $4.2 million cumulative-effect adjustment to retained earnings as of the adoption date. The enhanced disclosure requirements provided for by the Update were adopted on a prospective basis. Reporting periods prior to the adoption of the Update are accounted for and presented in accordance with the applicable GAAP. Refer to Note 4: Loans and Leases for additional information regarding modifications granted to borrowers experiencing financial difficulty. ASU No. 2022-01—Derivatives and Hedging (Topic 815): Fair Value Hedging—Portfolio Layer Method In March 2022, the FASB issued ASU No. 2022-01—Derivatives and Hedging (Topic 815): Fair Value Hedging—Portfolio Layer Method, which expands the current last-of-layer method of hedge accounting that permits only one hedged layer to allow multiple hedged layers of a single closed portfolio. To reflect that expansion, the last-of-layer method is renamed the portfolio layer method. Additionally, the amendments in this Update: (i) expand the scope of the portfolio layer method to include non-prepayable assets; (ii) specify eligible hedging instruments in a single-layer hedge; (iii) provide additional guidance on the accounting for and disclosure of hedge basis adjustments; and (iv) specify how hedge basis adjustments should be considered when determining credit losses for the assets included in the closed portfolio. An entity may also reclassify debt securities classified in the held-to-maturity category at the date of adoption to the available-for-sale category only if the entity applies portfolio layer method hedging to one or more closed portfolios that include those debt securities within a 30-day period. The Company adopted the Update on January 1, 2023 on a prospective basis. The adoption of this guidance did not have a material impact on the Company's Consolidated Financial Statements. The entity did not reclassify any debt securities from the held-to-maturity category to the available-for-sale category as permitted upon adoption. ASU No. 2021-08—Business Combinations (Topic 805)—Accounting for Contract Assets and Contract Liabilities from Contracts with Customers In October 2021, the FASB issued ASU No. 2021-08—Business Combinations (Topic 805)—Accounting for Contract Assets and Contract Liabilities from Contracts with Customers, which requires that an acquirer recognize and measure contract assets and contract liabilities acquired in a business combination in accordance with Topic 606, Revenue from Contracts with Customers. At the acquisition date, an acquirer should account for the related revenue contracts in accordance with Topic 606 as if it had originated the contracts. The Company adopted the Update on January 1, 2023 on a prospective basis. The adoption of this guidance did not have a material impact on the Company's Consolidated Financial Statements. Relevant Accounting Standards Issued But Not Yet Adopted ASU No. 2023-02—Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method (a consensus of the Emerging Issues Task Force) In March 2023, the FASB issued ASU No. 2023-02—Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method (a consensus of the Emerging Issues Task Force), which permits reporting entities to elect to account for their tax equity investments, regardless of the program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. A reporting entity may make an accounting policy election to apply the proportional amortization method in accordance with paragraph 323-740-25-4 on a tax-credit-program-by-tax-credit-program basis rather than electing to apply the proportional amortization method at the reporting entity level or to individual investments. A reporting entity that applies the proportional amortization method to qualifying tax equity investments must account for the receipt of the investment tax credits using the flow-through method under Topic 740, Income Taxes, even if the entity applies the deferral method for other investment tax credit received. The amendments also remove certain guidance for Qualified Affordable Housing Project Investments, require the application of the delayed equity contribution guidance to all tax equity investments, and require specific disclosures that must be applied to all investments that generate income tax credits and other income tax benefits from a tax credit program for which the entity has elected to apply the proportional amortization method in accordance with Subtopic 323-740. The Update is effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years, with early adoption permitted. The amendments generally must be applied on either a modified retrospective or retrospective basis with a cumulative-effect adjustment to retained earnings reflecting the difference between the previous method used to account for the tax equity investment and the application of the proportional amortization method since the investment was entered into. The adoption of this guidance is not expected to have a material impact on the Consolidated Financial Statements as the Company's investments in tax credit structures are currently limited to LIHTC investments, which are already being accounted for using the proportional amortization method. ASU No. 2023-01—Leases (Topic 842): Common Control Arrangements In March 2023, the FASB issued ASU No. 2023-01—Leases (Topic 842): Common Control Arrangements, which requires that leasehold improvements associated with leases between entities under common control be: (i) amortized by the lessee over the useful live of the leasehold improvements to the common control group (regardless of the lease term) as long as the lessee controls the use of the underlying asset (the leased asset) through a lease; however, if the lessor obtained the right to control the use of the underlying asset through a lease with another entity not within the same common control group, the amortization period may not exceed the amortization period of the common control group; and (ii) accounted for as a transfer between entities under common control through an adjustment to equity, if, and when, the lessee no longer controls the use of the underlying asset. Additionally, those leasehold improvements are subject to the impairment guidance in Topic 360, Property, Plant, and Equipment. The Update is effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years, with early adoption permitted. The amendments either may be applied prospectively to all new and existing leasehold improvements recognized on or after the adoption date with any remaining unamortized balance of existing leasehold improvements amortized over their remaining useful life to the common control group determined at that date; or retrospectively to the beginning of the period in which the entity first applied Topic 842, with any leasehold improvements that otherwise would not have been amortized or impaired recognized through a cumulative-effect adjustment to the opening balance of retained earnings at the beginning of the earliest period presented in accordance with Topic 842. The Company is in the early assessment stages of evaluating the amendments and the impact of adoption on its Consolidated Financial Statements. ASU No. 2022-03—Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions In June 2022, the FASB issued ASU No. 2022-03—Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions, which clarifies that a contractual restriction on the sale of an equity security is not considered part of the unit of account of the equity security, and therefore, is not considered in measuring fair value. The amendments also clarify that an entity cannot, as a separate unit of account, recognize and measure a contractual sale restriction, and requires the following disclosures for equity securities subject to contractual sale restrictions: (i) the fair value of equity securities subject to contractual sale restrictions reflected on the balance sheet; (ii) the nature and remaining duration of the restriction(s); and (iii) the circumstances that could cause a lapse in the restriction(s). The Update is effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years, with early adoption permitted. For all entities except investment companies, the amendments should be applied prospectively with any adjustments from the adoption of the amendments recognized in earnings and disclosed on the date of adoption. The adoption of this guidance is not expected to have a material impact on the Consolidated Financial Statements and disclosures. The Company does not currently consider contractual restrictions on the sale of an equity security in measuring fair value.

Mergers and Acquisitions (Table

Mergers and Acquisitions (Tables)	6 Months Ended
Mergers and Acquisitions (Tables)	Jun. 30, 2023
Business Combination and Asset Acquisition [Abstract]
Summary of Purchase Price Allocation	The following table summarizes the allocation of the purchase price to the fair value of the identifiable assets acquired and liabilities assumed from Sterling as of January 31, 2022: (In thousands) Unpaid Principal Balance Fair Value Purchase price consideration $ 5,180,300 Assets: Cash and due from banks 510,929 Interest-bearing deposits 3,207 Investment securities available-for-sale 4,429,948 Federal Home Loan Bank and Federal Reserve Bank Stock 150,502 Loans held for sale 23,517 Loans and leases: Commercial non-mortgage $ 5,570,782 5,527,657 Asset-based 694,137 683,958 Commercial real estate 6,790,600 6,656,405 Multi-family 4,303,381 4,255,906 Equipment financing 1,350,579 1,314,311 Warehouse lending 647,767 643,754 Residential 1,313,785 1,281,637 Home equity 132,758 122,553 Other consumer 12,559 12,525 Total loans and leases $ 20,816,348 20,498,706 Deferred tax assets, net (59,716) Premises and equipment 264,421 Other intangible assets 210,100 Bank-owned life insurance policies 645,510 Accrued interest receivable and other assets 986,729 Total assets acquired $ 27,663,853 Liabilities: Non-interest-bearing deposits $ 6,620,248 Interest-bearing deposits 16,643,755 Securities sold under agreements to repurchase and other borrowings 27,184 Long-term debt 516,881 Accrued expenses and other liabilities 589,689 Total liabilities assumed $ 24,397,757 Net assets acquired 3,266,096 Goodwill $ 1,914,204
Summary of Supplemental Pro Forma Information Adjustments	The following table summarizes total merger-related expenses, which were primarily incurred in connection with the merger with Sterling: Three months ended June 30, Six months ended June 30, (In thousands) 2023 2022 2023 2022 Compensation and benefits (1) $ 6,675 $ 24,117 $ 17,787 $ 65,702 Occupancy (2) 495 30,999 1,230 31,355 Technology and equipment (3) 6,837 812 5,128 19,897 Professional and outside services (4) 18,939 3,824 38,948 48,281 Marketing 826 84 961 135 Other expense (5) 7,068 6,804 6,159 9,765 Total merger-related expenses $ 40,840 $ 66,640 $ 70,213 $ 175,135 (1) Comprised primarily of severance and employee retention costs, and executive synergy stock awards. (2) Comprised primarily of charges associated with the Company's corporate real estate consolidation plan in 2022. (3) Comprised primarily of technology contract termination costs, and charges to support core conversion activities in 2023. (4) Comprised primarily of advisory, accounting, and other professional fees, and charges to support core conversion activities in 2023. The amount for the six months ended June 30, 2023, includes a reduction of $1.7 million to a previously recorded contract termination charge during the three months ended March 31, 2023, due to a decrease in volume usage. (5) Comprised primarily of contract termination costs, disposals on property and equipment, and other miscellaneous expenses. The following tables summarize the change in accrued expenses and other liabilities as it relates to severance and contract termination costs, which were primarily incurred in connection with the merger with Sterling: Three months ended June 30, 2023 2022 (In thousands) Severance Contract Termination Total Severance Contract Termination Total Balance, beginning of period $ 5,961 $ 23,775 $ 29,736 $ 32,156 $ 17,704 $ 49,860 Additions charged to expense 1,988 — 1,988 7,808 — 7,808 Cash payments (4,545) — (4,545) (15,029) — (15,029) Other (235) — (235) (421) — (421) Balance, end of period $ 3,169 $ 23,775 $ 26,944 $ 24,514 $ 17,704 $ 42,218 Six months ended June 30, 2023 2022 (In thousands) Severance Contract Termination Total Severance (1) Contract Termination Total Balance, beginning of period $ 7,583 $ 30,362 $ 37,945 $ 10,835 $ — $ 10,835 Additions charged to expense 8,184 — 8,184 34,779 17,704 52,483 Cash payments (11,538) — (11,538) (16,795) — (16,795) Other (1,060) (6,587) (7,647) (4,305) — (4,305) Balance, end of period $ 3,169 $ 23,775 $ 26,944 $ 24,514 $ 17,704 $ 42,218

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
Investment Securities (Tables)	Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Debt Securities, Available-for-sale	The following tables summarize the amortized cost and fair value of available-for-sale securities by major type: At June 30, 2023 (In thousands) Amortized Cost (1) Unrealized Unrealized Fair Value U.S. Treasury notes $ 407,555 $ — $ (23,488) $ 384,067 Government agency debentures 302,115 — (41,014) 261,101 Municipal bonds and notes 1,678,826 5 (74,681) 1,604,150 Agency CMO 58,529 — (5,169) 53,360 Agency MBS 2,476,218 9 (291,320) 2,184,907 Agency CMBS 2,041,431 44 (306,553) 1,734,922 CMBS 907,602 — (31,483) 876,119 Corporate debt 712,726 — (103,967) 608,759 Private label MBS 47,485 — (4,435) 43,050 Other 9,817 — (911) 8,906 Total available-for-sale securities $ 8,642,304 $ 58 $ (883,021) $ 7,759,341 At December 31, 2022 (In thousands) Amortized Cost (1) Unrealized Unrealized Fair Value U.S. Treasury notes $ 755,968 $ — $ (38,928) $ 717,040 Government agency debentures 302,018 — (43,644) 258,374 Municipal bonds and notes 1,719,110 5 (85,913) 1,633,202 Agency CMO 64,984 — (5,019) 59,965 Agency MBS 2,461,337 26 (303,339) 2,158,024 Agency CMBS 1,664,600 — (258,114) 1,406,486 CMBS 929,588 — (32,948) 896,640 CLO 2,108 — (1) 2,107 Corporate debt 795,999 — (91,587) 704,412 Private label MBS 48,895 — (4,646) 44,249 Other 12,548 — (350) 12,198 Total available-for-sale securities $ 8,757,155 $ 31 $ (864,489) $ 7,892,697 (1) Accrued interest receivable on available-for-sale securities of $37.1 million and $36.9 million at June 30, 2023, and December 31, 2022, respectively, is excluded from amortized cost and is included in Accrued interest receivable and other assets on the accompanying Condensed Consolidated Balance Sheets. The following table summarizes the carrying value of available-for-sale securities pledged for deposits, borrowings, and other purposes: (In thousands) At June 30, 2023 At December 31, 2022 Pledged for deposits $ 2,251,240 $ 2,573,072 Pledged for borrowings and other 4,211,733 1,195,101 Total available-for-sale securities pledged $ 6,462,973 $ 3,768,173
Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value	The following tables summarize the gross unrealized losses and fair value of available-for-sale securities by length of time each major security type has been in a continuous unrealized loss position: At June 30, 2023 Less Than 12 Months 12 Months or More Total (Dollars in thousands) Fair Unrealized Fair Unrealized Number of Fair Unrealized U.S. Treasury notes $ — $ — $ 384,067 $ (23,488) 14 $ 384,067 $ (23,488) Government agency debentures 32,481 (2,376) 228,620 (38,638) 19 261,101 (41,014) Municipal bonds and notes 30,722 (506) 1,554,918 (74,175) 420 1,585,640 (74,681) Agency CMO 7,018 (349) 46,342 (4,820) 37 53,360 (5,169) Agency MBS 197,989 (4,220) 1,986,029 (287,100) 465 2,184,018 (291,320) Agency CMBS 345,784 (10,832) 1,347,550 (295,721) 142 1,693,334 (306,553) CMBS 48,536 (1,439) 827,583 (30,044) 51 876,119 (31,483) Corporate debt 8,805 (1,297) 599,954 (102,670) 92 608,759 (103,967) Private label MBS 11,880 (1,153) 31,170 (3,282) 3 43,050 (4,435) Other 4,789 (211) 4,117 (700) 2 8,906 (911) Total $ 688,004 $ (22,383) $ 7,010,350 $ (860,638) 1,245 $ 7,698,354 $ (883,021) At December 31, 2022 Less Than Twelve Months Twelve Months or Longer Total (Dollars in thousands) Fair Unrealized Fair Unrealized Number of Fair Unrealized U.S. Treasury notes $ 337,563 $ (19,167) $ 379,477 $ (19,761) 23 $ 717,040 $ (38,928) Government agency debentures 258,374 (43,644) — — 19 258,374 (43,644) Municipal bonds and notes 1,616,771 (85,913) — — 444 1,616,771 (85,913) Agency CMO 55,693 (4,640) 4,272 (379) 39 59,965 (5,019) Agency MBS 1,641,544 (206,412) 515,206 (96,927) 460 2,156,750 (303,339) Agency CMBS 485,333 (68,674) 921,153 (189,440) 132 1,406,486 (258,114) CMBS 273,150 (8,982) 598,490 (23,966) 52 871,640 (32,948) CLO — — 2,107 (1) 1 2,107 (1) Corporate debt 692,990 (89,692) 8,421 (1,895) 105 701,411 (91,587) Private label MBS 44,249 (4,646) — — 3 44,249 (4,646) Other 12,198 (350) — — 4 12,198 (350) Total $ 5,417,865 $ (532,120) $ 2,429,126 $ (332,369) 1,282 $ 7,846,991 $ (864,489)
Summary of Debt Securities by Contractual Maturity	The following table summarizes the amortized cost and fair value of available-for-sale securities by contractual maturity: At June 30, 2023 (In thousands) Amortized Cost Fair Value Maturing within 1 year $ 33,337 $ 33,164 After 1 year through 5 years 1,040,297 978,096 After 5 through 10 years 1,401,731 1,277,563 After 10 years 6,166,939 5,470,518 Total available-for-sale securities $ 8,642,304 $ 7,759,341 The following table summarizes the amortized cost and fair value of held-to-maturity securities by contractual maturity: At June 30, 2023 (In thousands) Amortized Cost Fair Value Maturing within 1 year $ 4,341 $ 4,340 After 1 year through 5 years 55,954 56,141 After 5 through 10 years 344,666 326,276 After 10 years 6,539,039 5,679,925 Total held-to-maturity securities $ 6,944,000 $ 6,066,682
Debt Securities, Held-to-maturity	The following tables summarize the amortized cost, fair value, and ACL on held-to-maturity securities by major type: At June 30, 2023 (In thousands) Amortized Cost (1) Unrealized Unrealized Fair Value Allowance Net Carrying Value Agency CMO $ 25,791 $ — $ (2,133) $ 23,658 $ — $ 25,791 Agency MBS 2,541,384 524 (325,432) 2,216,476 — 2,541,384 Agency CMBS 3,353,205 — (505,510) 2,847,695 — 3,353,205 Municipal bonds and notes 919,112 798 (36,263) 883,647 216 918,896 CMBS 104,508 — (9,302) 95,206 — 104,508 Total held-to-maturity securities $ 6,944,000 $ 1,322 $ (878,640) $ 6,066,682 $ 216 $ 6,943,784 At December 31, 2022 (In thousands) Amortized Cost (1) Unrealized Unrealized Fair Value Allowance Net Carrying Value Agency CMO $ 28,358 $ — $ (2,060) $ 26,298 $ — $ 28,358 Agency MBS 2,626,114 827 (339,592) 2,287,349 — 2,626,114 Agency CMBS 2,831,949 845 (407,648) 2,425,146 — 2,831,949 Municipal bonds and notes 928,845 1,098 (47,183) 882,760 182 928,663 CMBS 149,613 — (9,713) 139,900 — 149,613 Total held-to-maturity securities $ 6,564,879 $ 2,770 $ (806,196) $ 5,761,453 $ 182 $ 6,564,697 The following table summarizes the activity in the ACL on held-to-maturity securities: Three months ended June 30, Six months ended June 30, (In thousands) 2023 2022 2023 2022 Balance, beginning of period $ 282 $ 204 $ 182 $ 214 (Benefit) provision for credit losses (66) 6 34 (4) Balance, end of period $ 216 $ 210 $ 216 $ 210 The following tables summarize the amortized cost of held-to-maturity securities based on their lowest publicly available credit rating: June 30, 2023 Investment Grade (In thousands) Aaa Aa1 Aa2 Aa3 A1 A2 A3 Not Rated Agency CMO $ — $ 25,791 $ — $ — $ — $ — $ — $ — Agency MBS — 2,541,384 — — — — — — Agency CMBS — 3,353,205 — — — — — — Municipal bonds and notes 334,490 162,966 254,457 116,030 32,949 — 4,165 14,055 CMBS 104,508 — — — — — — — Total held-to-maturity securities $ 438,998 $ 6,083,346 $ 254,457 $ 116,030 $ 32,949 $ — $ 4,165 $ 14,055 December 31, 2022 Investment Grade (In thousands) Aaa Aa1 Aa2 Aa3 A1 A2 A3 Not Rated Agency CMO $ — $ 28,358 $ — $ — $ — $ — $ — $ — Agency MBS — 2,626,114 — — — — — — Agency CMBS — 2,831,949 — — — — — — Municipal bonds and notes 336,035 163,312 255,235 116,870 38,177 4,165 — 15,051 CMBS 149,613 — — — — — — — Total held-to-maturity securities $ 485,648 $ 5,649,733 $ 255,235 $ 116,870 $ 38,177 $ 4,165 $ — $ 15,051 The following table summarizes the carrying value of held-to-maturity securities pledged for deposits, borrowings, and other purposes: (In thousands) At June 30, 2023 At December 31, 2022 Pledged for deposits $ 1,259,307 $ 1,596,777 Pledged for borrowings and other 5,080,928 260,735 Total held-to-maturity securities pledged $ 6,340,235 $ 1,857,512

Loans and Leases (Tables)

Loans and Leases (Tables)	6 Months Ended
Loans and Leases (Tables)	Jun. 30, 2023
Loans and Leases Receivable Disclosure [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	The following table summarizes loans and leases by portfolio segment and class: (In thousands) At June 30, At December 31, 2022 Commercial non-mortgage $ 17,255,036 $ 16,392,795 Asset-based 1,718,251 1,821,642 Commercial real estate 13,542,251 12,997,163 Multi-family 7,118,820 6,621,982 Equipment financing 1,535,564 1,628,393 Warehouse lending 708,560 641,976 Commercial portfolio 41,878,482 40,103,951 Residential 8,140,182 7,963,420 Home equity 1,552,850 1,633,107 Other consumer 54,534 63,948 Consumer portfolio 9,747,566 9,660,475 Loans and leases $ 51,626,048 $ 49,764,426 At June 30, 2023 (In thousands) Current 30-59 Days 60-89 Days 90+ Days Non-Accrual Total Commercial non-mortgage $ 25,006 $ — $ — $ — $ 35,900 $ 60,906 Commercial real estate 14,762 171 — — — 14,933 Equipment financing 1,408 — — — — 1,408 Residential — — — — 2,765 2,765 Home equity 116 — — — 265 381 Total $ 41,292 $ 171 $ — $ — $ 38,930 $ 80,393
Past Due Financing Receivables	The following tables summarize the aging of accrual and non-accrual loans and leases by class: At June 30, 2023 (In thousands) 30-59 Days 60-89 Days 90 or More Days Past Due Non-accrual Total Past Due and Non-accrual Current (1) Total Loans Commercial non-mortgage $ 2,550 $ 24,664 $ — $ 95,332 $ 122,546 $ 17,132,490 $ 17,255,036 Asset-based — — — 9,428 9,428 1,708,823 1,718,251 Commercial real estate 750 249 — 40,272 41,271 13,500,980 13,542,251 Multi-family 1,023 — — 5,823 6,846 7,111,974 7,118,820 Equipment financing 3,459 1,368 28 11,353 16,208 1,519,356 1,535,564 Warehouse lending — — — — — 708,560 708,560 Commercial portfolio 7,782 26,281 28 162,208 196,299 41,682,183 41,878,482 Residential 8,596 1,918 — 26,750 37,264 8,102,918 8,140,182 Home equity 3,305 2,926 — 26,213 32,444 1,520,406 1,552,850 Other consumer 406 104 1 72 583 53,951 54,534 Consumer portfolio 12,307 4,948 1 53,035 70,291 9,677,275 9,747,566 Total $ 20,089 $ 31,229 $ 29 $ 215,243 $ 266,590 $ 51,359,458 $ 51,626,048 (1) At June 30, 2023, there were $22.6 million of commercial loans that had either reached their contractual maturity or experienced administrative delays. These loans are classified as current in the table above. In July 2023, $19.0 million were resolved. At December 31, 2022 (In thousands) 30-59 Days 60-89 Days 90 or More Days Past Due Non-accrual Total Past Due and Non-accrual Current Total Loans Commercial non-mortgage $ 8,434 $ 821 $ 645 $ 71,884 $ 81,784 $ 16,311,011 $ 16,392,795 Asset-based 5,921 — — 20,024 25,945 1,795,697 1,821,642 Commercial real estate 1,494 23,492 68 39,057 64,111 12,933,052 12,997,163 Multi-family 1,157 — — 636 1,793 6,620,189 6,621,982 Equipment financing 806 9,988 — 12,344 23,138 1,605,255 1,628,393 Warehouse lending — — — — — 641,976 641,976 Commercial portfolio 17,812 34,301 713 143,945 196,771 39,907,180 40,103,951 Residential 8,246 3,083 — 25,424 36,753 7,926,667 7,963,420 Home equity 5,293 2,820 — 27,924 36,037 1,597,070 1,633,107 Other consumer 1,028 85 13 148 1,274 62,674 63,948 Consumer portfolio 14,567 5,988 13 53,496 74,064 9,586,411 9,660,475 Total $ 32,379 $ 40,289 $ 726 $ 197,441 $ 270,835 $ 49,493,591 $ 49,764,426
Financing Receivable, Nonaccrual	The following table provides additional information on non-accrual loans and leases: At June 30, 2023 At December 31, 2022 (In thousands) Non-accrual Non-accrual with No Allowance Non-accrual Non-accrual with No Allowance Commercial non-mortgage $ 95,332 $ 14,097 $ 71,884 $ 12,598 Asset-based 9,428 1,330 20,024 1,491 Commercial real estate 40,272 1,461 39,057 90 Multi-family 5,823 5,823 636 — Equipment financing 11,353 2,532 12,344 2,240 Commercial portfolio 162,208 25,243 143,945 16,419 Residential 26,750 10,656 25,424 10,442 Home equity 26,213 13,868 27,924 15,193 Other consumer 72 4 148 5 Consumer portfolio 53,035 24,528 53,496 25,640 Total $ 215,243 $ 49,771 $ 197,441 $ 42,059
Activity In Allowance For Losses	The following table summarizes the change in the ACL on loans and leases by portfolio segment: At or for the three months ended June 30, 2023 2022 (In thousands) Commercial Portfolio Consumer Portfolio Total Commercial Portfolio Consumer Portfolio Total ACL on loans and leases: Balance, beginning of period $ 554,750 $ 59,164 $ 613,914 $ 510,696 $ 58,675 $ 569,371 Provision (benefit) 38,824 (3,575) 35,249 12,041 (313) 11,728 Charge-offs (21,945) (1,085) (23,030) (18,757) (896) (19,653) Recoveries 1,024 1,754 2,778 7,765 2,288 10,053 Balance, end of period $ 572,653 $ 56,258 $ 628,911 $ 511,745 $ 59,754 $ 571,499 At or for the six months ended June 30, 2023 2022 (In thousands) Commercial Portfolio Consumer Portfolio Total Commercial Portfolio Consumer Portfolio Total ACL on loans and leases: Balance, beginning of period $ 533,125 $ 61,616 $ 594,741 $ 257,877 $ 43,310 $ 301,187 Adoption of ASU No. 2022-02 7,704 (1,831) 5,873 — — — Initial allowance for PCD loans and leases (1) — — — 78,376 9,669 88,045 Provision (benefit) 77,581 (4,511) 73,070 196,368 4,428 200,796 Charge-offs (48,355) (2,183) (50,538) (30,005) (2,016) (32,021) Recoveries 2,598 3,167 5,765 9,129 4,363 13,492 Balance, end of period $ 572,653 $ 56,258 $ 628,911 $ 511,745 $ 59,754 $ 571,499 Individually evaluated for credit losses 46,215 7,513 53,728 38,847 4,450 43,297 Collectively evaluated for credit losses $ 526,438 $ 48,745 $ 575,183 $ 472,898 $ 55,304 $ 528,202 (1) Represents the establishment of the initial reserve for PCD loans and leases, which is reported net of $48.3 million of day one charge-offs recognized at the date of acquisition in accordance with GAAP.
Financing Receivable Credit Quality Indicators	The following tables summarize the amortized cost basis of commercial loans and leases by Composite Credit Risk Profile grade and origination year: At June 30, 2023 (In thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Total Commercial non-mortgage: Risk rating: Pass $ 1,672,800 $ 4,814,327 $ 1,535,033 $ 814,981 $ 649,366 $ 1,081,197 $ 6,099,138 $ 16,666,842 Special mention 24,849 83,936 80,312 12,292 15,636 9,017 83,731 309,773 Substandard 23,672 60,311 15,390 32,278 45,315 36,438 65,017 278,421 Total commercial non-mortgage 1,721,321 4,958,574 1,630,735 859,551 710,317 1,126,652 6,247,886 17,255,036 Current period gross write-offs 324 329 535 511 178 3,675 — 5,552 Asset-based: Risk rating: Pass 10,964 8,284 — 1,565 9,427 56,838 1,487,079 1,574,157 Special mention — — — — — 381 71,033 71,414 Substandard — — — — 1,330 — 71,350 72,680 Total asset-based 10,964 8,284 — 1,565 10,757 57,219 1,629,462 1,718,251 Current period gross write-offs — — — — 13,189 — — 13,189 Commercial real estate: Risk rating: Pass 1,488,568 3,589,054 1,912,030 1,356,330 1,329,052 3,397,728 149,322 13,222,084 Special mention 656 2,496 27,071 31,689 23,739 58,074 1,408 145,133 Substandard 15,936 512 16,658 15,447 54,635 71,846 — 175,034 Total commercial real estate 1,505,160 3,592,062 1,955,759 1,403,466 1,407,426 3,527,648 150,730 13,542,251 Current period gross write-offs — — 2,574 3,813 1,059 21,094 — 28,540 Multi-family: Risk rating: Pass 992,039 1,911,526 1,003,245 449,847 607,503 2,077,167 1 7,041,328 Special mention — — — 22,471 364 41,458 — 64,293 Substandard — — — 373 — 12,826 — 13,199 Total multi-family 992,039 1,911,526 1,003,245 472,691 607,867 2,131,451 1 7,118,820 Current period gross write-offs — — — — — 1,033 — 1,033 Equipment financing: Risk rating: Pass 201,925 348,890 284,909 253,271 243,348 124,924 — 1,457,267 Special mention — — 11,296 8,751 13,031 7,207 — 40,285 Substandard — 3,290 5,466 12,452 4,721 12,083 — 38,012 Total equipment financing 201,925 352,180 301,671 274,474 261,100 144,214 — 1,535,564 Current period gross write-offs — — — — — 41 — 41 Warehouse lending: Risk rating: Pass — — — — — — 708,560 708,560 Total warehouse lending — — — — — — 708,560 708,560 Current period gross write-offs — — — — — — — — Total commercial portfolio $ 4,431,409 $ 10,822,626 $ 4,891,410 $ 3,011,747 $ 2,997,467 $ 6,987,184 $ 8,736,639 $ 41,878,482 Current period gross write-offs $ 324 $ 329 $ 3,109 $ 4,324 $ 14,426 $ 25,843 $ — $ 48,355 At December 31, 2022 (In thousands) 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Total Commercial non-mortgage: Pass $ 5,154,781 $ 1,952,158 $ 965,975 $ 792,977 $ 593,460 $ 780,200 $ 5,670,532 $ 15,910,083 Special mention 104,277 15,598 21,168 263 14,370 7,770 40,142 203,588 Substandard 28,203 11,704 69,954 36,604 70,634 16,852 41,917 275,868 Doubtful — — — 1 — — 3,255 3,256 Total commercial non-mortgage 5,287,261 1,979,460 1,057,097 829,845 678,464 804,822 5,755,846 16,392,795 Asset-based: Pass 19,659 3,901 9,424 14,413 5,163 55,553 1,551,250 1,659,363 Special mention — — — — — — 80,476 80,476 Substandard — — — 1,491 — — 80,312 81,803 Total asset-based 19,659 3,901 9,424 15,904 5,163 55,553 1,712,038 1,821,642 Commercial real estate: Pass 3,420,635 2,246,672 1,556,185 1,605,869 1,058,730 2,681,052 97,832 12,666,975 Special mention 21,878 8,995 7,264 37,570 47,419 66,652 1,000 190,778 Substandard 519 2,459 216 31,163 47,021 57,997 — 139,375 Doubtful — — — 1 — 34 — 35 Total commercial real estate 3,443,032 2,258,126 1,563,665 1,674,603 1,153,170 2,805,735 98,832 12,997,163 Multi-family: Pass 1,992,980 1,057,705 507,065 694,066 444,564 1,748,337 51,655 6,496,372 Special mention 37,677 — — 95 40,307 726 8,838 87,643 Substandard — — 382 — 12,681 24,904 — 37,967 Total multi-family 2,030,657 1,057,705 507,447 694,161 497,552 1,773,967 60,493 6,621,982 Equipment financing: Pass 388,641 345,792 331,419 308,441 98,874 83,264 — 1,556,431 Special mention — 185 — 11,965 6,775 25 — 18,950 Substandard 314 16,711 18,436 5,016 5,307 7,228 — 53,012 Total equipment financing 388,955 362,688 349,855 325,422 110,956 90,517 — 1,628,393 Warehouse lending: Pass — — — — — — 641,976 641,976 Total warehouse lending — — — — — — 641,976 641,976 Total commercial portfolio $ 11,169,564 $ 5,661,880 $ 3,487,488 $ 3,539,935 $ 2,445,305 $ 5,530,594 $ 8,269,185 $ 40,103,951 The following tables summarize the amortized cost basis of consumer loans by FICO score and origination year: At June 30, 2023 (In thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Total Residential: Risk rating: 800+ $ 83,586 $ 711,811 $ 1,063,248 $ 438,330 $ 158,719 $ 967,612 $ — $ 3,423,306 740-799 215,262 834,914 843,118 331,838 101,576 697,162 — 3,023,870 670-739 75,016 334,227 302,307 87,497 56,903 366,022 — 1,221,972 580-669 6,654 49,107 52,155 14,510 5,893 124,153 — 252,472 579 and below 423 46,418 4,669 2,906 108,166 55,980 — 218,562 Total residential 380,941 1,976,477 2,265,497 875,081 431,257 2,210,929 — 8,140,182 Current period gross write-offs — — 2 — — 273 — 275 Home equity: Risk rating: 800+ 13,079 27,754 35,706 26,457 7,471 61,655 414,584 586,706 740-799 13,347 24,237 30,998 16,481 6,992 38,169 374,503 504,727 670-739 10,007 16,092 15,479 5,914 3,724 30,021 248,766 330,003 580-669 943 2,931 2,872 1,246 1,200 11,552 71,317 92,061 579 and below 278 652 572 596 392 7,241 29,622 39,353 Total home equity 37,654 71,666 85,627 50,694 19,779 148,638 1,138,792 1,552,850 Current period gross write-offs — — — — — 494 — 494 Other consumer: Risk rating: 800+ 386 516 260 402 622 180 22,092 24,458 740-799 704 715 2,354 1,011 1,515 581 4,443 11,323 670-739 377 640 430 1,447 2,403 362 8,350 14,009 580-669 57 178 132 280 566 91 1,221 2,525 579 and below 70 131 82 21 57 42 1,816 2,219 Total other consumer 1,594 2,180 3,258 3,161 5,163 1,256 37,922 54,534 Current period gross write-offs 750 7 3 176 232 246 — 1,414 Total consumer portfolio $ 420,189 $ 2,050,323 $ 2,354,382 $ 928,936 $ 456,199 $ 2,360,823 $ 1,176,714 $ 9,747,566 Current period gross write-offs $ 750 $ 7 $ 5 $ 176 $ 232 $ 1,013 $ — $ 2,183 At December 31, 2022 (In thousands) 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Total Residential: 800+ $ 527,408 $ 954,568 $ 469,518 $ 160,596 $ 28,361 $ 997,409 $ — $ 3,137,860 740-799 963,026 946,339 311,295 111,913 43,684 689,771 — 3,066,028 670-739 381,515 350,671 103,999 62,365 18,451 384,687 — 1,301,688 580-669 40,959 49,648 14,484 5,836 2,357 138,107 — 251,391 579 and below 52,464 3,693 2,057 84,032 1,299 62,908 — 206,453 Total residential 1,965,372 2,304,919 901,353 424,742 94,152 2,272,882 — 7,963,420 Home equity: 800+ 25,475 35,129 25,612 7,578 12,545 55,352 465,318 627,009 740-799 26,743 35,178 17,621 8,111 7,765 32,270 398,692 526,380 670-739 18,396 16,679 8,175 3,635 7,614 30,060 259,646 344,205 580-669 2,848 3,068 1,520 1,456 1,163 13,607 76,614 100,276 579 and below 426 386 651 661 563 4,736 27,814 35,237 Total home equity 73,888 90,440 53,579 21,441 29,650 136,025 1,228,084 1,633,107 Other consumer: 800+ 495 218 544 1,045 247 56 19,196 21,801 740-799 888 2,624 1,959 2,494 941 364 12,218 21,488 670-739 977 603 2,480 4,238 1,041 118 6,107 15,564 580-669 211 117 337 801 173 54 2,223 3,916 579 and below 169 101 29 116 36 21 707 1,179 Total other consumer 2,740 3,663 5,349 8,694 2,438 613 40,451 63,948 Total consumer portfolio $ 2,042,000 $ 2,399,022 $ 960,281 $ 454,877 $ 126,240 $ 2,409,520 $ 1,268,535 $ 9,660,475
Troubled Debt Restructurings on Financing Receivables	The following table summarizes the amortized cost basis at June 30, 2023, of loans modified to borrowers experiencing financial difficulty, disaggregated by class and type of concession granted: For the three months ended June 30, 2023 (In thousands) Interest Rate Reduction Term Extension Payment Delay Combination Term Extension and Interest Rate Reduction Combination Term Extension and Payment Delay Total % of Total Class (2) Commercial non-mortgage $ — $ 13,025 $ 9,548 $ 336 $ 11,520 $ 34,429 0.2 % Commercial real estate — 11,522 171 — — 11,693 0.1 Equipment financing — — 1,408 — — 1,408 0.1 Residential — 1,159 1,606 — — 2,765 — Home equity 64 52 — 145 — 261 — Total (1) $ 64 $ 25,758 $ 12,733 $ 481 $ 11,520 $ 50,556 0.1 % For the six months ended June 30, 2023 (In thousands) Interest Rate Reduction Term Extension Payment Delay Combination Term Extension and Interest Rate Reduction Combination Term Extension and Payment Delay Total % of Total Class (2) Commercial non-mortgage $ — $ 39,502 $ 9,548 $ 336 $ 11,520 $ 60,906 0.4 % Commercial real estate — 14,762 171 — — 14,933 0.1 Equipment financing — — 1,408 — — 1,408 0.1 Residential — 1,159 1,606 — — 2,765 — Home equity 64 108 — 209 — 381 — Total (1) $ 64 $ 55,531 $ 12,733 $ 545 $ 11,520 $ 80,393 0.2 % (1) The total amortized cost excludes accrued interest receivable of $0.2 million for each reporting period. (2) Represents the total amortized cost of the loans modified as a percentage of the total period end loan balance by class. The following table describes the financial effect of the modifications made to borrowers experiencing financial difficulty: For the three months ended June 30, 2023 Financial Effect Interest Rate Reduction: Home equity Reduced weighted average interest rate by 0.5% Term Extension: Commercial non-mortgage Extended term by a weighted average of 1.8 years Commercial real estate Extended term by a weighted average of 1.0 year Residential Extended term by a weighted average of 1.4 years Home equity Extended term by a weighted average of 14.4 years Payment Delay: Commercial non-mortgage Provided partial payment deferrals for a weighted average of 0.5 years Commercial real estate Provided payment deferrals for a weighted average of 0.3 years to be received at contractual maturity Equipment financing Provided partial payment deferrals for a weighted average of 0.5 years Residential Provided payment deferrals for a weighted average of 1.0 year Combination Term Extension and Interest Rate Reduction: Commercial non-mortgage Extended term by a weighted average of 3.7 years and reduced weighted average interest rate by 1.3% Home equity Extended term by a weighted average of 16.0 years and reduced weighted average interest rate by 1.4% Combination Term Extension and Payment Delay: Commercial non-mortgage Extended term by a weighted average of 1.0 year and provided payment deferrals for a weighted average of 1.3 years For the six months ended June 30, 2023 Financial Effect Interest Rate Reduction: Home equity Reduced weighted average interest rate by 0.5% Term Extension: Commercial non-mortgage Extended term by a weighted average of 0.9 years Commercial real estate Extended term by a weighted average of 1.3 years Residential Extended term by a weighted average of 1.4 years Home equity Extended term by a weighted average of 11.5 years Payment Delay: Commercial non-mortgage Provided partial payment deferrals for a weighted average of 0.5 years Commercial real estate Provided payment deferrals for a weighted average of 0.3 years to be received at contractual maturity Equipment financing Provided partial payment deferrals for a weighted average of 0.5 years Residential Provided payment deferrals for a weighted average of 1.0 year Combination Term Extension and Rate Reduction: Commercial non-mortgage Extended term by a weighted average of 3.7 years and reduced weighted average interest rate by 1.3% Home equity Extended term by a weighted average of 12.7 years and reduced weighted average interest rate by 1.4% Combination Term Extension and Payment Delay: Commercial non-mortgage Extended term by a weighted average of 1.0 year and provided payment deferrals for a weighted average of 1.3 years The following table summarizes information related to TDRs: (In thousands) At December 31, 2022 Accrual status $ 110,868 Non-accrual status 83,954 Total TDRs $ 194,822 Additional funds committed to borrowers in TDR status $ 1,724 Specific reserves for TDRs included in the ACL on loans and leases: Commercial portfolio $ 14,578 Consumer portfolio 3,559 The following table summarizes loans and leases modified as TDRs by class and modification type during the three and six months ended June 30, 2022: Three months ended June 30, 2022 Six months ended June 30, 2022 (Dollars in thousands) Number of Recorded Investment (1) Number of Recorded Investment (1) Commercial non-mortgage Term extension — $ — 2 $ 97 Combination - Term extension and interest rate reduction 3 351 5 443 Other (2) 1 22,964 1 22,964 Equipment financing Other (2) 1 1,157 1 1,157 Residential Extended maturity 1 893 1 893 Other (2) 2 308 6 2,762 Home equity Adjusted interest rate 1 74 1 74 Combination - Term extension and interest rate reduction 7 680 11 724 Other (2) 9 399 24 1,333 Total TDRs 25 $ 26,826 52 $ 30,447 (1) Post-modification balances approximated pre-modification balances. The aggregate amount of charge-offs due to restructurings was not significant. (2) Other included covenant modifications, forbearance, discharges under Chapter 7 bankruptcy, or other concessions.

Transfers and Servicing of Fi_2

Transfers and Servicing of Financial Assets (Tables)	6 Months Ended
Transfers and Servicing of Financial Assets (Tables)	Jun. 30, 2023
Transfers and Servicing [Abstract]
Transfer of Financial Assets Accounted for as Sales	The following table summarizes information related to mortgage banking activities: Three months ended June 30, Six months ended June 30, (In thousands) 2023 2022 2023 2022 Net gain on sale $ 91 $ 106 $ 168 $ 503 Origination fees 34 37 45 172 Fair value adjustment 4 (41) (25) (145) Mortgage banking activities $ 129 $ 102 $ 188 $ 530 Proceeds from sale $ 4,828 $ 6,080 $ 8,660 $ 32,833 Loans sold with servicing rights retained 4,119 4,954 5,348 30,317
Servicing Asset at Amortized Cost	The following table presents the change in the carrying amount for mortgage servicing rights: Three months ended June 30, Six months ended June 30, (In thousands) 2023 2022 2023 2022 Balance, beginning of period $ 9,189 $ 9,735 $ 9,515 $ 9,237 Acquired from Sterling — — — 859 Additions 37 56 52 265 Amortization (368) (1,199) (709) (1,769) Balance, end of period $ 8,858 $ 8,592 $ 8,858 $ 8,592

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
Goodwill and Other Intangible Assets (Tables)	Jun. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The following table summarizes changes in the carrying amount of goodwill: (In thousands) At June 30, At December 31, Balance, beginning of period $ 2,514,104 $ 538,373 interLINK acquisition 143,216 — Sterling merger (1) (25,561) 1,939,765 Bend acquisition (1) (294) 35,966 Balance, end of period $ 2,631,465 $ 2,514,104 (1) The 2023 changes reflect adjustments recorded within the one-year measurement period, which were identified in the first quarter as a result of extended information gathering and new information that arose from integration activities. The allocation of the purchase price and goodwill calculations for both the Sterling merger and Bend acquisition were final as of March 31, 2023.
Schedule of Finite-Lived Intangible Assets	The following table summarizes other intangible assets: At June 30, 2023 At December 31, 2022 (In thousands) Gross Carrying Accumulated Net Carrying Gross Carrying Accumulated Net Carrying Core deposits $ 146,037 $ 45,623 $ 100,414 $ 146,037 $ 36,710 $ 109,327 Customer relationships (1) 151,000 34,362 116,638 115,000 24,985 90,015 Non-competition agreement (1) 4,000 400 3,600 — — — Total other intangible assets $ 301,037 $ 80,385 $ 220,652 $ 261,037 $ 61,695 $ 199,342 (1) The increase in the gross carrying amount is attributed to the acquisition of interLINK in the first quarter of 2023, in which the Company identified and recorded a $36.0 million intangible asset for broker dealer relationships, which is being amortized on an accelerated basis over an estimated useful life of 10 years, and a $4.0 million non-competition agreement, which is being amortized on a straight-line basis over an estimated useful life of 5 years.
Schedule Of Future Amortization expense	The remaining estimated aggregate future amortization expense for other intangible assets is as follows: (In thousands) At June 30, Remainder of 2023 $ 17,517 2024 29,618 2025 25,956 2026 25,565 2027 25,565 Thereafter 96,431

Deposits (Tables)

Deposits (Tables)	6 Months Ended
Deposits (Tables)	Jun. 30, 2023
Deposit Liabilities [Abstract]
Deposit Liabilities, Type	The following table summarizes deposits by type: (In thousands) At June 30, At December 31, Non-interest-bearing: Demand $ 11,157,390 $ 12,974,975 Interest-bearing: Health savings accounts 8,206,844 7,944,892 Checking 8,775,975 9,237,529 Money market 16,189,678 11,062,652 Savings 7,131,587 8,673,343 Time deposits 7,286,058 4,160,949 Total interest-bearing $ 47,590,142 $ 41,079,365 Total deposits $ 58,747,532 $ 54,054,340 Time deposits, money market, and interest-bearing checking obtained through brokers (1) $ 3,234,854 $ 1,964,873 Aggregate amount of time deposit accounts that exceeded the FDIC limit 3,553,953 1,894,950 Demand deposit overdrafts reclassified as loan balances 9,312 8,721 (1) Excludes $4.3 billion of money market sweep deposits received through interLINK at June 30, 2023.
Time Deposit Maturities	The following table summarizes the scheduled maturities of time deposits: (In thousands) At June 30, Remainder of 2023 $ 4,189,693 2024 2,859,064 2025 134,973 2026 53,889 2027 35,600 Thereafter 12,839 Total time deposits $ 7,286,058

Borrowings (Tables)

Borrowings (Tables)	6 Months Ended
Borrowings (Tables)	Jun. 30, 2023
Debt Disclosure [Abstract]
Schedule of Repurchase Agreements	The following table summarizes securities sold under agreements to repurchase and other borrowings: At June 30, 2023 At December 31, 2022 (Dollars in thousands) Total Outstanding Rate Total Outstanding Rate Securities sold under agreements to repurchase (1) $ 243,580 0.11 % $ 282,005 0.11 % Federal funds purchased — — 869,825 4.44 Securities sold under agreements to repurchase and other borrowings $ 243,580 0.11 % $ 1,151,830 3.38 % (1) The Company has the right of offset with respect to all repurchase agreement assets and liabilities. Total securities sold under agreements to repurchase are presented as gross transactions, as only liabilities are outstanding for the periods presented.
Federal Home Loan Bank, Advances	The following table summarizes information for FHLB advances: At June 30, 2023 At December 31, 2022 (Dollars in thousands) Total Outstanding Weighted- Total Outstanding Weighted- Maturing within 1 year $ 4,300,180 5.26 % $ 5,450,187 4.40 % After 1 but within 2 years — — — — After 2 but within 3 years — — — — After 3 but within 4 years — — — — After 4 but within 5 years 478 1.35 252 — After 5 years 9,713 2.07 10,113 2.09 Total FHLB advances $ 4,310,371 5.26 % $ 5,460,552 4.39 % Aggregate carrying value of assets pledged as collateral $ 21,308,244 $ 13,692,379 Remaining borrowing capacity at FHLB 11,559,717 4,291,326
Schedule of Long-term Debt Instruments	The following table summarizes long-term debt: (Dollars in thousands) At June 30, At December 31, 4.375% Senior fixed-rate notes due February 15, 2024 (2) $ 132,550 $ 150,000 4.100% Senior fixed-rate notes due March 25, 2029 (3) 330,781 333,458 4.000% Subordinated fixed-to-floating rate notes due December 30, 2029 274,000 274,000 3.875% Subordinated fixed-to-floating rate notes due November 1, 2030 225,000 225,000 Junior subordinated debt Webster Statutory Trust I floating-rate notes due September 17, 2033 (4) 77,320 77,320 Total senior and subordinated debt 1,039,651 1,059,778 Discount on senior fixed-rate notes (647) (756) Debt issuance cost on senior fixed-rate notes (1,612) (1,824) Premium on subordinated fixed-to-floating rate notes 14,866 15,930 Long-term debt (1) $ 1,052,258 $ 1,073,128 (1) The classification of debt as long-term is based on the initial terms of greater than one year as of the date of issuance. (2) During the three months ended June 30, 2023, the Company repurchased and retired $17.5 million of these senior notes at 96 cents on the dollar. The resulting $0.7 million gain recognized on extinguishment was recorded in Other income on the accompanying Condensed Consolidated Statements of Income. (3) The Company de-designated its fair value hedging relationship on these senior notes in 2020. A basis adjustment of $30.8 million and $33.5 million at June 30, 2023, and December 31, 2022, respectively, is included in the carrying value and is being amortized over the remaining life of the senior notes. (4) The interest rate on the Webster Statutory Trust I floating-rate notes at June 30, 2023, and December 31, 2022, was calculated based on 3-month LIBOR plus 2.95%, which yielded 8.46% and 7.69% respectively.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive (Loss) Income, Net of Tax (Tables)	6 Months Ended
	Jun. 30, 2023
Equity [Abstract]
Schedule of Changes in Accumulated Other Comprehensive Loss by Component	The following tables summarize the changes in each component of accumulated other comprehensive (loss) income, net of tax: Three months ended June 30, 2023 Six months ended June 30, 2023 (In thousands) Securities Available For Sale Derivative Instruments Defined Benefit Pension and Other Postretirement Benefit Plans Total Securities Available Derivative Instruments Defined Benefit Pension and Other Postretirement Benefit Plans Total Balance, beginning of period $ (559,542) $ 12,500 $ (40,978) $ (588,020) $ (631,160) $ (8,874) $ (44,926) $ (684,960) Other comprehensive (loss) income before reclassifications (85,072) (48,123) — (133,195) (28,437) (27,341) 3,553 (52,225) Amounts reclassified from accumulated other comprehensive (loss) income 35 600 1,757 2,392 15,018 1,192 2,152 18,362 Other comprehensive (loss) income, net of tax (85,037) (47,523) 1,757 (130,803) (13,419) (26,149) 5,705 (33,863) Balance, end of period $ (644,579) $ (35,023) $ (39,221) $ (718,823) $ (644,579) $ (35,023) $ (39,221) $ (718,823) Three months ended June 30, 2022 Six months ended June 30, 2022 (In thousands) Securities Available For Sale Derivative Instruments Defined Benefit Pension and Other Postretirement Benefit Plans Total Securities Available Derivative Instruments Defined Benefit Pension and Other Postretirement Benefit Plans Total Balance, beginning of period $ (240,343) $ (1,774) $ (33,606) $ (275,723) $ 4,536 $ 6,070 $ (33,186) $ (22,580) Other comprehensive (loss) (205,273) (1,070) (328) (206,671) (450,152) (9,683) (1,047) (460,882) Amounts reclassified from accumulated other comprehensive (loss) income — 762 300 1,062 — 1,531 599 2,130 Other comprehensive (loss), (205,273) (308) (28) (205,609) (450,152) (8,152) (448) (458,752) Balance, end of period $ (445,616) $ (2,082) $ (33,634) $ (481,332) $ (445,616) $ (2,082) $ (33,634) $ (481,332)
Schedule of Accumulated Other Comprehensive Loss	The following table further summarizes the amounts reclassified from accumulated other comprehensive (loss) income: Accumulated Other Comprehensive Three months ended Six months ended Associated Line Item on the June 30, June 30, 2023 2022 2023 2022 (In thousands) Investment securities available-for-sale: Net holding (losses) $ (48) $ — $ (20,531) $ — (Loss) on sale of investment securities Tax benefit 13 — 5,513 — Income tax expense Net of tax $ (35) $ — $ (15,018) $ — Derivative instruments: Hedge terminations $ (99) $ (76) $ (175) $ (153) Interest expense Premium amortization (724) (969) (1,460) (1,947) Interest income Tax benefit 223 283 443 569 Income tax expense Net of tax $ (600) $ (762) $ (1,192) $ (1,531) Defined benefit pension and other postretirement benefit plans: Actuarial net loss amortization $ (2,410) $ (411) $ (2,952) $ (822) Other expense Tax benefit 653 111 800 223 Income tax expense Net of tax $ (1,757) $ (300) $ (2,152) $ (599)

Regulatory Capital and Restri_2

Regulatory Capital and Restrictions (Tables)	6 Months Ended
Regulatory Capital and Restrictions (Tables)	Jun. 30, 2023
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Information On The Capital Ratios	The following tables provides information on the capital ratios for the Holding Company and the Bank: At June 30, 2023 Actual (1) Minimum Requirement Well Capitalized (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Webster Financial Corporation CET1 risk-based capital $ 5,923,265 10.65 % $ 2,502,484 4.5 % $ 3,614,699 6.5 % Total risk-based capital 7,368,290 13.25 4,448,860 8.0 5,561,075 10.0 Tier 1 risk-based capital 6,207,244 11.16 3,336,645 6.0 4,448,860 8.0 Tier 1 leverage capital 6,207,244 8.36 2,969,294 4.0 3,711,617 5.0 Webster Bank CET1 risk-based capital $ 6,780,817 12.21 % $ 2,498,477 4.5 % $ 3,608,911 6.5 % Total risk-based capital 7,350,677 13.24 4,441,736 8.0 5,552,170 10.0 Tier 1 risk-based capital 6,780,817 12.21 3,331,302 6.0 4,441,736 8.0 Tier 1 leverage capital 6,780,817 9.14 2,967,209 4.0 3,709,012 5.0 At December 31, 2022 Actual (1) Minimum Requirement Well Capitalized (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Webster Financial Corporation CET1 risk-based capital $ 5,822,369 10.71 % $ 2,446,344 4.5 % $ 3,533,608 6.5 % Total risk-based capital 7,203,029 13.25 4,349,056 8.0 5,436,320 10.0 Tier 1 risk-based capital 6,106,348 11.23 3,261,792 6.0 4,349,056 8.0 Tier 1 leverage capital 6,106,348 8.95 2,730,212 4.0 3,412,765 5.0 Webster Bank CET1 risk-based capital $ 6,661,504 12.28 % $ 2,442,058 4.5 % $ 3,527,417 6.5 % Total risk-based capital 7,165,935 13.20 4,341,437 8.0 5,426,796 10.0 Tier 1 risk-based capital 6,661,504 12.28 3,256,078 6.0 4,341,437 8.0 Tier 1 leverage capital 6,661,504 9.77 2,727,476 4.0 3,409,345 5.0

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	6 Months Ended
Variable Interest Entities (Tables)	Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of LIHTC Investments and Commitments	The following table summarizes the Company's LIHTC investments and related unfunded commitments: (In thousands) June 30, 2023 December 31, 2022 Gross investment in LIHTC investments $ 868,459 $ 797,453 Accumulated amortization (105,719) (69,424) Net investment in LIHTC investments $ 762,740 $ 728,029 Unfunded commitments for LIHTC investments $ 366,869 $ 335,959

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	6 Months Ended
Earnings Per Common Share (Tables)	Jun. 30, 2023
Earnings Per Share [Abstract]
Earnings Per Share Basic And Diluted	The following table summarizes the calculation of basic and diluted earnings per common share: Three months ended June 30, Six months ended June 30, (In thousands, except per share data) 2023 2022 2023 2022 Net income $ 234,968 $ 182,311 $ 455,972 $ 165,564 Less: Preferred stock dividends 4,162 4,163 8,325 7,594 Net income available to common stockholders 230,806 178,148 447,647 157,970 Less: Earnings allocated to participating securities 2,235 1,718 4,073 1,456 Earnings applicable to common stockholders $ 228,571 $ 176,430 $ 443,574 $ 156,514 Weighted-average common shares outstanding - basic 172,739 175,845 172,752 161,698 Add: Effect of dilutive stock options and restricted stock 64 50 87 87 Weighted-average common shares outstanding - diluted 172,803 175,895 172,839 161,785 Basic earnings per common share $ 1.32 $ 1.00 $ 2.57 $ 0.97 Diluted earnings per common share 1.32 1.00 2.57 0.97

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	6 Months Ended
Derivative Financial Instruments (Tables)	Jun. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	The following tables present the notional amounts and fair values, including accrued interest, of derivative positions: At June 30, 2023 Asset Derivatives Liability Derivatives (In thousands) Notional Amounts Fair Value Notional Amounts Fair Value Designated as hedging instruments: Interest rate derivatives (1) $ 1,000,000 $ 453 $ 4,750,000 $ 46,087 Not designated as hedging instruments: Interest rate derivatives (1) 7,322,980 375,350 7,329,236 387,261 Mortgage banking derivatives (2) 798 5 — — Other (3) 230,315 153 683,669 348 Total not designated as hedging instruments 7,554,093 375,508 8,012,905 387,609 Gross derivative instruments, before netting $ 8,554,093 375,961 $ 12,762,905 433,696 Less: Master netting agreements 52,273 52,273 Cash collateral 311,774 — Total derivative instruments, after netting $ 11,914 $ 381,423 At December 31, 2022 Asset Derivatives Liability Derivatives (In thousands) Notional Amounts Fair Value Notional Amounts Fair Value Designated as hedging instruments: Interest rate derivatives (1) $ 1,350,000 $ 1,515 $ 1,750,000 $ 9,632 Not designated as hedging instruments: Interest rate derivatives (1) 7,024,507 221,225 7,022,844 403,952 Mortgage banking derivatives (2) 3,283 32 — — Other (3) 161,934 134 606,478 915 Total not designated as hedging instruments 7,189,724 221,391 7,629,322 404,867 Gross derivative instruments, before netting $ 8,539,724 222,906 $ 9,379,322 414,499 Less: Master netting agreements 16,129 16,129 Cash collateral 184,095 — Total derivative instruments, after netting $ 22,682 $ 398,370 (1) Balances related to clearing houses are presented as a single unit of account. In accordance with their rule books, clearing houses legally characterize variation margin payments as settlement of derivatives rather than collateral against derivative positions. At June 30, 2023, and December 31, 2022, notional amounts of interest rate swaps cleared through clearing houses include $0.6 billion and $2.7 billion for asset derivatives, respectively, and $0.1 billion and zero for liability derivatives, respectively. The related fair values approximate zero. (2) Notional amounts related to residential loans exclude approved floating rate commitments of $4.1 million and $2.4 million at June 30, 2023, and December 31, 2022, respectively. (3) Other derivatives include foreign currency forward contracts related to lending arrangements, a Visa equity swap transaction, and risk participation agreements. Notional amounts of risk participation agreements include $201.7 million and $125.6 million for asset derivatives and $648.2 million and $559.2 million for liability derivatives at June 30, 2023, and December 31, 2022, respectively, which have insignificant related fair values.
Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The following tables present fair value positions transitioned from gross to net upon applying counterparty netting agreements: At June 30, 2023 (In thousands) Gross Amount Recognized Derivative Offset Amount Cash Collateral Received/Pledged Net Amount Presented Amounts Not Offset Asset derivatives $ 370,140 $ 52,273 $ 311,774 $ 6,093 $ 6,112 Liability derivatives 52,273 52,273 — — 3,386 At December 31, 2022 (In thousands) Gross Amount Recognized Derivative Offset Amount Cash Collateral Received/Pledged Net Amount Presented Amounts Not Offset Asset derivatives $ 217,246 $ 16,129 $ 184,095 $ 17,022 $ 17,392 Liability derivatives 16,129 16,129 — — 1,545
Schedule of Net Investment Hedges, Statements of Financial Performance and Financial Position, Location	The following table summarizes the income statement effect of derivatives designated as hedging instruments: Recognized In Three months ended June 30, Six months ended June 30, (In thousands) Net Interest Income 2023 2022 2023 2022 Fair value hedges: Interest rate derivatives Deposits interest expense $ 10,928 $ — $ 693 $ — Hedged item Deposits interest expense (10,152) — 275 — Net recognized on fair value hedges $ (776) $ — $ (968) $ — Cash flow hedges: Interest rate derivatives Long-term debt interest expense $ 99 $ 77 $ 175 $ 153 Interest rate derivatives Interest and fees on loans and leases (724) 1,244 (1,460) 3,803 Net recognized on cash flow hedges $ (823) $ 1,167 $ (1,635) $ 3,650 The following table summarizes information related to fair value hedging adjustments: Condensed Consolidated Balance Sheet Line Item in Which Hedged Item is Located Carrying Amount of Hedged Item Cumulative Amount of Fair Value Hedging Adjustment Included in Carrying Amount (In thousands) At June 30, At December 31, At June 30, At December 31, Deposits $ 400,275 $ — $ 275 $ — Long-term debt (1) 330,781 333,458 30,781 33,458 (1) The Company de-designated its fair value hedging relationship on its long-term debt in 2020. The basis adjustment included in the carrying amount is being amortized into interest expense over the remaining life of the long-term debt.
Other Derivatives Not Designated For Hedge Accounting	The following table summarizes the income statement effect of derivatives not designated as hedging instruments: Recognized In Three months ended June 30, Six months ended June 30, (In thousands) Non-interest Income 2023 2022 2023 2022 Interest rate derivatives Other income $ (194) $ 12,814 $ (3,881) $ 19,259 Mortgage banking derivatives Mortgage banking activities (12) (29) (28) (78) Other Other income (921) 1,027 (1,656) 1,424 Total not designated as hedging instruments $ (1,127) $ 13,812 $ (5,565) $ 20,605

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
Fair Value Measurements (Tables)	Jun. 30, 2023
Fair Value Disclosures [Abstract]
Fair Value Option, Disclosures	The following table compares the fair value to the unpaid principal balance of originated loans held for sale: At June 30, 2023 At December 31, 2022 (In thousands) Fair Value Unpaid Principal Balance Difference Fair Value Unpaid Principal Balance Difference Originated loans held for sale $ 1,800 $ 1,322 $ 478 $ 1,991 $ 1,631 $ 360
Fair Value Measurement Inputs and Valuation Techniques	The following table summarizes the unobservable inputs used to derive the estimated fair value of the Company’s contingent consideration liabilities at June 30, 2023 (dollars in thousands): Agreement Maximum Amount Probability of Achievement Payment Term Discount Rate Fair Value (i) Re-sign broker dealers $ 4,826 99.0 % 0.22 5.50 % $ 4,798 (ii) Deposit program growth $ 12,500 100.0 % 1.97 5.50 % $ 11,241
Fair Value Of Assets And Liabilities Measured On Recurring Basis	The following tables summarize the fair values of assets and liabilities measured at fair value on a recurring basis: At June 30, 2023 (In thousands) Level 1 Level 2 Level 3 Total Financial Assets: Available-for-sale securities: U.S. Treasury notes $ 384,067 $ — $ — $ 384,067 Government agency debentures — 261,101 — 261,101 Municipal bonds and notes — 1,604,150 — 1,604,150 Agency CMO — 53,360 — 53,360 Agency MBS — 2,184,907 — 2,184,907 Agency CMBS — 1,734,922 — 1,734,922 CMBS — 876,119 — 876,119 Corporate debt — 608,759 — 608,759 Private label MBS — 43,050 — 43,050 Other — 8,906 — 8,906 Total available-for-sale securities 384,067 7,375,274 — 7,759,341 Gross derivative instruments, before netting (1) 67 375,894 — 375,961 Originated loans held for sale — 1,800 — 1,800 Investments held in Rabbi Trusts 12,347 — — 12,347 Alternative investments (2) 567 — — 29,023 Total financial assets $ 397,048 $ 7,752,968 $ — $ 8,178,472 Financial Liabilities: Gross derivative instruments, before netting (1) $ 262 $ 433,434 $ — $ 433,696 Contingent consideration — — 16,039 16,039 Total financial liabilities $ 262 $ 433,434 $ 16,039 $ 449,735 At December 31, 2022 (In thousands) Level 1 Level 2 Level 3 Total Financial Assets: Available-for-sale securities: U.S. Treasury notes $ 717,040 $ — $ — $ 717,040 Government agency debentures — 258,374 — 258,374 Municipal bonds and notes — 1,633,202 — 1,633,202 Agency CMO — 59,965 — 59,965 Agency MBS — 2,158,024 — 2,158,024 Agency CMBS — 1,406,486 — 1,406,486 CMBS — 896,640 — 896,640 CLO — 2,107 — 2,107 Corporate debt — 704,412 — 704,412 Private label MBS — 44,249 — 44,249 Other — 12,198 — 12,198 Total available-for-sale securities 717,040 7,175,657 — 7,892,697 Gross derivative instruments, before netting (1) 79 222,827 — 222,906 Originated loans held for sale — 1,991 — 1,991 Investments held in Rabbi Trusts 12,103 — — 12,103 Alternative investments (2) 430 — — 89,678 Total financial assets $ 729,652 $ 7,400,475 $ — $ 8,219,375 Financial Liabilities: Gross derivative instruments, before netting (1) $ 843 $ 413,656 $ — $ 414,499 (1) Additional information regarding the impact of netting derivative assets and derivative liabilities, as well as the impact from offsetting cash collateral paid to the same derivative counterparties, can be found within Note 13: Derivative Financial Instruments. (2) Certain alternative investments are recorded at NAV. Assets measured at NAV are not classified within the fair value hierarchy.
Summary Of Estimated Fair Values Of Significant Financial Instruments	The following table summarizes the carrying amounts, estimated fair values, and classifications within the fair value hierarchy of selected financial instruments and mortgage servicing rights: At June 30, 2023 At December 31, 2022 (In thousands) Carrying Fair Carrying Fair Assets: Level 1 Cash and cash equivalents $ 1,360,759 $ 1,360,759 $ 839,943 $ 839,943 Level 2 Held-to-maturity investment securities 6,943,784 6,066,682 6,564,697 5,761,453 Level 3 Loans and leases, net 50,997,137 49,027,570 49,169,685 47,604,463 Mortgage servicing assets 8,858 25,520 9,515 27,043 Liabilities: Level 2 Deposit liabilities $ 51,461,474 $ 51,461,474 $ 49,893,391 $ 49,893,391 Time deposits 7,286,058 7,189,837 4,160,949 4,091,979 Securities sold under agreements to repurchase and other borrowings 243,580 243,548 1,151,830 1,151,797 FHLB advances 4,310,371 4,310,259 5,460,552 5,459,218 Long-term debt (1) 1,052,258 971,751 1,073,128 1,001,779

Retirement Benefit Plans (Table

Retirement Benefit Plans (Tables)	6 Months Ended
Retirement Benefit Plans (Tables)	Jun. 30, 2023
Retirement Benefits [Abstract]
Summary of Net Periodic Benefit Cost	The following tables summarize the components of net periodic benefit cost (income): Three months ended June 30, 2023 2022 (In thousands) Pension SERP OPEB Pension SERP OPEB Service cost $ — $ — $ 7 $ — $ — $ 9 Interest cost 2,211 47 263 1,380 17 213 Expected return on plan assets (2,699) — — (3,668) — — Amortization of actuarial loss (gain) 1,216 2 (677) 423 6 (19) Net periodic benefit cost (income) $ 728 $ 49 $ (407) $ (1,865) $ 23 $ 203 Six months ended June 30, 2023 2022 (In thousands) Pension SERP OPEB Pension SERP OPEB Service cost $ — $ — $ 14 $ — $ — $ 15 Interest cost 4,422 114 643 2,757 32 357 Expected return on plan assets (5,398) — — (7,337) — — Amortization of actuarial loss (gain) 2,432 3 (1,352) 845 13 (37) Net periodic benefit cost (income) $ 1,456 $ 117 $ (695) $ (3,735) $ 45 $ 335

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
Segment Reporting (Tables)	Jun. 30, 2023
Segment Reporting [Abstract]
Operating Results And Total Assets Reportable Segments	The following tables present balance sheet information, including the appropriate allocations, for the Company's reportable segments and the Corporate and Reconciling category: At June 30, 2023 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Reconciling Consolidated Total Goodwill $ 2,029,204 $ 57,485 $ 544,776 $ — $ 2,631,465 Total assets 46,426,949 120,295 10,725,344 16,765,655 74,038,243 At December 31, 2022 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Reconciling Consolidated Total Goodwill $ 1,904,291 $ 57,779 $ 552,034 $ — $ 2,514,104 Total assets 44,380,582 122,729 10,625,334 16,148,876 71,277,521 The following tables present operating results, including the appropriate allocations, for the Company’s reportable segments and the Corporate and Reconciling category: Three months ended June 30, 2023 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Reconciling Consolidated Total Net interest income $ 383,606 $ 75,421 $ 204,455 $ (79,653) $ 583,829 Non-interest income 32,255 23,023 28,877 5,219 89,374 Non-interest expense 110,582 42,643 108,880 81,984 344,089 Pre-tax, pre-provision net revenue 305,279 55,801 124,452 (156,418) 329,114 Provision for credit losses 34,480 — 769 (3,751) 31,498 Income before income taxes 270,799 55,801 123,683 (152,667) 297,616 Income tax expense 67,971 15,066 32,652 (53,041) 62,648 Net income $ 202,828 $ 40,735 $ 91,031 $ (99,626) $ 234,968 Three months ended June 30, 2022 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Reconciling Consolidated Total Net interest income $ 333,421 $ 49,558 $ 179,287 $ (75,606) $ 486,660 Non-interest income 49,430 26,552 30,798 14,153 120,933 Non-interest expense 102,720 37,540 107,366 110,601 358,227 Pre-tax, pre-provision net revenue 280,131 38,570 102,719 (172,054) 249,366 Provision (benefit) for credit losses 22,782 — (11,053) 514 12,243 Income before income taxes 257,349 38,570 113,772 (172,568) 237,123 Income tax expense 64,337 10,337 29,581 (49,443) 54,812 Net income $ 193,012 $ 28,233 $ 84,191 $ (123,125) $ 182,311 Six months ended June 30, 2023 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Reconciling Consolidated Total Net interest income $ 767,920 $ 147,151 $ 415,038 $ (150,997) $ 1,179,112 Non-interest income 67,652 47,090 54,836 (9,438) 160,140 Non-interest expense 219,091 86,343 215,759 155,363 $ 676,556 Pre-tax, pre-provision net revenue 616,481 $ 107,898 254,115 (315,798) 662,696 Provision for credit losses 70,517 — 2,553 5,177 78,247 Income before income tax expense 545,964 107,898 251,562 (320,975) 584,449 Income tax expense 137,037 29,132 66,412 (104,104) 128,477 Net income $ 408,927 $ 78,766 $ 185,150 $ (216,871) $ 455,972 Six months ended June 30, 2022 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Reconciling Consolidated Total Net interest income $ 620,490 $ 94,135 $ 315,964 $ (149,681) $ 880,908 Non-interest income 88,173 53,510 58,699 24,586 224,968 Non-interest expense 191,960 73,949 202,876 249,227 718,012 Pre-tax, pre-provision net revenue 516,703 73,696 171,787 (374,322) 387,864 Provision (benefit) for credit losses 204,713 — (3,917) 292 201,088 Income before income tax expense 311,990 73,696 175,704 (374,614) 186,776 Income tax expense 74,392 19,751 45,634 (118,565) 21,212 Net income $ 237,598 $ 53,945 $ 130,070 $ (256,049) $ 165,564

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	6 Months Ended
Revenue from Contracts with Customers (Tables)	Jun. 30, 2023
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following tables summarize revenues recognized in accordance with ASC Topic 606, Revenue from Contracts with Customers. These disaggregated amounts, together with sources of other non-interest income that are subject to other GAAP topics, have been reconciled to non-interest income by reportable segment as presented within Note 16: Segment Reporting. Three months ended June 30, 2023 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Consolidated Non-interest Income: Deposit service fees $ 5,582 $ 20,986 $ 19,181 $ (331) $ 45,418 Loan and lease related fees (1) 4,323 — — — 4,323 Wealth and investment services (2) 2,873 — 4,525 (7) 7,391 Other income — 2,037 1,198 1,122 4,357 Revenue from contracts with customers 12,778 23,023 24,904 784 61,489 Other sources of non-interest income 19,477 — 3,973 4,435 27,885 Total non-interest income $ 32,255 $ 23,023 $ 28,877 $ 5,219 $ 89,374 Three months ended June 30, 2022 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Consolidated Non-interest Income: Deposit service fees $ 7,647 $ 24,949 $ 18,366 $ 423 $ 51,385 Loan and lease related fees (1) 6,077 — — — 6,077 Wealth and investment services 2,770 — 8,479 (5) 11,244 Other income — 1,603 285 — 1,888 Revenue from contracts with customers 16,494 26,552 27,130 418 70,594 Other sources of non-interest income 32,936 — 3,668 13,735 50,339 Total non-interest income $ 49,430 $ 26,552 $ 30,798 $ 14,153 $ 120,933 Six months ended June 30, 2023 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Consolidated Non-interest Income: Deposit service fees $ 10,972 $ 43,078 $ 37,205 $ (401) $ 90,854 Loan and lease related fees (1) 8,750 — — — 8,750 Wealth and investment services (2) 5,640 — 8,353 (15) 13,978 Other income — 4,012 1,556 2,054 7,622 Revenue from contracts with customers 25,362 47,090 47,114 1,638 121,204 Other sources of non-interest income 42,290 — 7,722 (11,076) 38,936 Total non-interest income $ 67,652 $ 47,090 $ 54,836 $ (9,438) $ 160,140 Six months ended June 30, 2022 (In thousands) Commercial Banking HSA Bank Consumer Banking Corporate and Consolidated Non-interest Income: Deposit service fees $ 14,332 $ 50,083 $ 34,329 $ 468 $ 99,212 Loan and lease related fees (1) 10,575 — — — 10,575 Wealth and investment services 5,904 — 15,950 (13) 21,841 Other income — 3,427 670 — 4,097 Revenue from contracts with customers 30,811 53,510 50,949 455 135,725 Other sources of non-interest income 57,362 — 7,750 24,131 89,243 Total non-interest income $ 88,173 $ 53,510 $ 58,699 $ 24,586 $ 224,968 (1) A portion of loan and lease related fees comprises income generated from factored receivables and payroll financing activities that is within the scope of ASC Topic 606. (2) Effective as of the fourth quarter of 2022, the wealth and investment services revenue stream was impacted by the restructuring of a process in which the Company offers brokerage, investment advisory, and certain insurance-related services to customers. The staff providing these services, who had previously been employees of the Bank, are now employees of a third-party service provider. As a result, the Company now recognizes income from this program on a net basis, which thereby reduces gross reported wealth and investment services non-interest income and the related compensation and benefits non-interest expense on the accompanying Condensed Consolidated Statements of Income.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
Commitments and Contingencies (Tables)	Jun. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Outstanding Financial Instruments Contract Amounts Represent Credit Risk	The following table summarizes the outstanding amounts of credit-related financial instruments with off-balance sheet risk: (In thousands) At June 30, At December 31, 2022 Commitments to extend credit $ 10,706,088 $ 11,237,496 Standby letters of credit 426,658 380,655 Commercial letters of credit 54,196 53,512 Total credit-related financial instruments with off-balance sheet risk $ 11,186,942 $ 11,671,663

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Narrative (Details) - Accounting Standards Update 2022-02 $ in Millions	Jan. 01, 2023 USD ($)
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	$ 5.9
Deferred Income Tax Assets, Net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	1.7
Retained Earnings [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	$ 4.2

Mergers and Acquisitions - Narr

Mergers and Acquisitions - Narrative (Details) $ in Thousands	Jan. 11, 2023 USD ($)	Feb. 18, 2022 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	Jan. 31, 2022 USD ($)	Jan. 01, 2022 USD ($)	Dec. 31, 2021 USD ($)
Business Acquisition [Line Items]
Depositary share, interest in a share of preferred stock						0.025
Goodwill			$ 2,631,465	$ 2,514,104	$ 2,514,104			$ 538,373
Sterling
Business Acquisition [Line Items]
Goodwill						$ 1,914,204	$ 1,900,000
Net assets acquired						$ 3,266,096
Net assets acquired			$ 25,600
Bend Financial, Inc.
Business Acquisition [Line Items]
Equity interests acquired		100%
Cash consideration		$ 55,300
Net assets acquired		19,600
Bend Financial, Inc. \| Internal use software
Business Acquisition [Line Items]
Intangible assets acquired		15,900
Bend Financial, Inc. \| Customer relationships (1)
Business Acquisition [Line Items]
Intangible assets acquired		$ 3,000
interLINK
Business Acquisition [Line Items]
Equity interests acquired	10,000%
Goodwill	$ 143,200
Cash consideration	158,600
Business Combination, Consideration Transferred	174,600
Contingent consideration	16,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Acquired Including Goodwill	31,400
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Royalty Liabilities	15,900
interLINK \| Broker Dealer Relationship
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	36,000
interLINK \| Non Competition Agreement
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	4,000
interLINK \| Developed Technology Rights
Business Acquisition [Line Items]
Intangible assets acquired	6,000
InterLINK Acquisition
Business Acquisition [Line Items]
Deposits assets	$ 9,000,000

Mergers and Acquisitions - Summ

Mergers and Acquisitions - Summary of Purchase Price Consideration (Details) $ in Thousands	Jan. 31, 2022 USD ($)
Sterling
Business Acquisition [Line Items]
Total consideration	$ 5,180,300

Mergers and Acquisitions - Su_2

Mergers and Acquisitions - Summary of Purchase Price Allocation (Details) - USD ($) $ in Thousands	Jan. 31, 2022	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Jan. 01, 2022	Dec. 31, 2021
Liabilities:
Goodwill		$ 2,631,465	$ 2,514,104	$ 2,514,104		$ 538,373
Sterling
Business Acquisition [Line Items]
Total consideration	$ 5,180,300
Assets:
Cash and due from banks	510,929
Interest-bearing deposits	3,207
Investment securities available-for-sale	4,429,948
Federal Home Loan Bank and Federal Reserve Bank Stock	150,502
Loans held for sale	23,517
Unpaid principal balance, total loans and leases		20,816,348
Total loans and leases	20,498,706
Deferred tax assets, net	(59,716)
Premises and equipment	264,421
Other intangible assets	210,100
Bank-owned life insurance policies	645,510
Accrued interest receivable and other assets	986,729
Total assets acquired	27,663,853
Liabilities:
Non-interest-bearing deposits	6,620,248
Interest-bearing deposits	16,643,755
Securities sold under agreements to repurchase and other borrowings	27,184
Long-term debt	516,881
Accrued expenses and other liabilities	589,689
Total liabilities assumed	24,397,757
Net assets acquired	3,266,096
Goodwill	1,914,204				$ 1,900,000
Sterling \| Commercial non-mortgage
Assets:
Unpaid principal balance, total loans and leases		5,570,782
Total loans and leases	5,527,657
Sterling \| Asset-based
Assets:
Unpaid principal balance, total loans and leases		694,137
Total loans and leases	683,958
Sterling \| Commercial real estate
Assets:
Unpaid principal balance, total loans and leases		6,790,600
Total loans and leases	6,656,405
Sterling \| Multi-family
Assets:
Unpaid principal balance, total loans and leases		4,303,381
Total loans and leases	4,255,906
Sterling \| Equipment financing
Assets:
Unpaid principal balance, total loans and leases		1,350,579
Total loans and leases	1,314,311
Sterling \| Warehouse lending
Assets:
Unpaid principal balance, total loans and leases		647,767
Total loans and leases	643,754
Sterling \| Residential
Assets:
Unpaid principal balance, total loans and leases		1,313,785
Total loans and leases	1,281,637
Sterling \| Home equity
Assets:
Unpaid principal balance, total loans and leases		132,758
Total loans and leases	122,553
Sterling \| Other consumer
Assets:
Unpaid principal balance, total loans and leases		$ 12,559
Total loans and leases	$ 12,525

Mergers and Acquisitions- Summa

Mergers and Acquisitions- Summary of Supplemental Pro Forma Information Adjustments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Accrued severance and other benefits	$ 26,944	$ 42,218	$ 26,944	$ 42,218	$ 29,736	$ 37,945	$ 49,860	$ 10,835
Strategic initiative charges	1,988	7,808	8,184	52,483
Payments for Restructuring	(4,545)	(15,029)	(11,538)	(16,795)
Adjustments	(235)	(421)	(7,647)	(4,305)
Employee Severance [Member]
Business Acquisition [Line Items]
Accrued severance and other benefits	3,169	24,514	3,169	24,514	5,961	7,583	32,156	10,835
Strategic initiative charges	1,988	7,808	8,184	34,779
Payments for Restructuring	(4,545)	(15,029)	(11,538)	(16,795)
Adjustments	(235)	(421)	(1,060)	(4,305)
Occupancy
Business Acquisition [Line Items]
Accrued severance and other benefits	23,775	17,704	23,775	17,704	$ 23,775	$ 30,362	$ 17,704	$ 0
Strategic initiative charges	0	0	0	17,704
Payments for Restructuring	0	0	0	0
Adjustments	0	0	(6,587)	0
Sterling
Business Acquisition [Line Items]
Merger-related expenses	40,840	66,640	70,213	175,135
Sterling \| Employee Severance [Member]
Business Acquisition [Line Items]
Adjustments				4,300
Compensation and benefits \| Sterling
Business Acquisition [Line Items]
Merger-related expenses	6,675	24,117	17,787	65,702
Occupancy \| Sterling
Business Acquisition [Line Items]
Merger-related expenses	495	30,999	1,230	31,355
Technology and equipment \| Sterling
Business Acquisition [Line Items]
Merger-related expenses	6,837	812	5,128	19,897
Business Combination, Increase (Decrease) In Acquisition Related Costs			4,800
Professional and outside services \| Sterling
Business Acquisition [Line Items]
Merger-related expenses	18,939	3,824	38,948	48,281
Marketing \| Sterling
Business Acquisition [Line Items]
Merger-related expenses	826	84	961	135
Other expense \| Sterling
Business Acquisition [Line Items]
Merger-related expenses	7,068	$ 6,804	$ 6,159	$ 9,765
Business Combination, Increase (Decrease) In Acquisition Related Costs	$ 1,700

Investment Securities (Summary

Investment Securities (Summary Of Debt Securities Available-for-Sale) (Detail) $ in Thousands	Jun. 30, 2023 USD ($) holding	Dec. 31, 2022 USD ($) holding
Debt Securities, Available-for-sale [Abstract]
Amortized Cost - Total available-for-sale debt securities	$ 8,642,304	$ 8,757,155
Unrealized Gains	58	31
Unrealized Losses	(883,021)	(864,489)
Investment securities available-for-sale, at fair value	7,759,341	7,892,697
Less than 12 months, fair value	688,004	5,417,865
Less than 12 months, unrealized losses	(22,383)	(532,120)
12 months or more, fair value	7,010,350	2,429,126
12 months or more, unrealized losses	$ (860,638)	$ (332,369)
Total, number of holdings \| holding	1,245	1,282
Total, fair value	$ 7,698,354	$ 7,846,991
Total, unrealized losses	(883,021)	(864,489)
Amortized Cost
Maturing within 1 year	33,337
After 1 year through 5 years	1,040,297
After 5 through 10 years	1,401,731
After 10 years	6,166,939
Amortized Cost - Total available-for-sale debt securities	8,642,304	8,757,155
Fair Value
Maturing within 1 year	33,164
After 1 year through 5 years	978,096
After 5 through 10 years	1,277,563
After 10 years	5,470,518
Fair Value, Total available-for-sale debt securities	7,759,341	7,892,697
Available-for-sale securities pledged	6,462,973	3,768,173
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 months, fair value	688,004	5,417,865
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	22,383	532,120
12 months or more, fair value	7,010,350	2,429,126
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 860,638	$ 332,369
Total, number of holdings \| holding	1,245	1,282
Total, fair value	$ 7,698,354	$ 7,846,991
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	883,021	864,489
U.S. Treasury notes
Debt Securities, Available-for-sale [Abstract]
Amortized Cost - Total available-for-sale debt securities	407,555	755,968
Unrealized Gains	0	0
Unrealized Losses	(23,488)	(38,928)
Investment securities available-for-sale, at fair value	384,067	717,040
Less than 12 months, fair value		337,563
Less than 12 months, unrealized losses		(19,167)
12 months or more, fair value	384,067	379,477
12 months or more, unrealized losses	$ (23,488)	$ (19,761)
Total, number of holdings \| holding	14	23
Total, fair value	$ 384,067	$ 717,040
Total, unrealized losses	(23,488)	(38,928)
Amortized Cost
Amortized Cost - Total available-for-sale debt securities	407,555	755,968
Fair Value
Fair Value, Total available-for-sale debt securities	384,067	717,040
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 months, fair value		337,563
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		19,167
12 months or more, fair value	384,067	379,477
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 23,488	$ 19,761
Total, number of holdings \| holding	14	23
Total, fair value	$ 384,067	$ 717,040
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	23,488	38,928
Government agency debentures
Debt Securities, Available-for-sale [Abstract]
Amortized Cost - Total available-for-sale debt securities	302,115	302,018
Unrealized Gains	0	0
Unrealized Losses	(41,014)	(43,644)
Investment securities available-for-sale, at fair value	261,101	258,374
Less than 12 months, fair value	32,481	258,374
Less than 12 months, unrealized losses	(2,376)	$ (43,644)
12 months or more, fair value	228,620
12 months or more, unrealized losses	$ (38,638)
Total, number of holdings \| holding	19	19
Total, fair value	$ 261,101	$ 258,374
Total, unrealized losses	(41,014)	(43,644)
Amortized Cost
Amortized Cost - Total available-for-sale debt securities	302,115	302,018
Fair Value
Fair Value, Total available-for-sale debt securities	261,101	258,374
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 months, fair value	32,481	258,374
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	2,376	$ 43,644
12 months or more, fair value	228,620
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 38,638
Total, number of holdings \| holding	19	19
Total, fair value	$ 261,101	$ 258,374
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	41,014	43,644
Municipal bonds and notes
Debt Securities, Available-for-sale [Abstract]
Amortized Cost - Total available-for-sale debt securities	1,678,826	1,719,110
Unrealized Gains	5	5
Unrealized Losses	(74,681)	(85,913)
Investment securities available-for-sale, at fair value	1,604,150	1,633,202
Less than 12 months, fair value	30,722	1,616,771
Less than 12 months, unrealized losses	(506)	$ (85,913)
12 months or more, fair value	1,554,918
12 months or more, unrealized losses	$ (74,175)
Total, number of holdings \| holding	420	444
Total, fair value	$ 1,585,640	$ 1,616,771
Total, unrealized losses	(74,681)	(85,913)
Amortized Cost
Amortized Cost - Total available-for-sale debt securities	1,678,826	1,719,110
Fair Value
Fair Value, Total available-for-sale debt securities	1,604,150	1,633,202
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 months, fair value	30,722	1,616,771
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	506	$ 85,913
12 months or more, fair value	1,554,918
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 74,175
Total, number of holdings \| holding	420	444
Total, fair value	$ 1,585,640	$ 1,616,771
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	74,681	85,913
Agency CMO
Debt Securities, Available-for-sale [Abstract]
Amortized Cost - Total available-for-sale debt securities	58,529	64,984
Unrealized Gains	0	0
Unrealized Losses	(5,169)	(5,019)
Investment securities available-for-sale, at fair value	53,360	59,965
Less than 12 months, fair value	7,018	55,693
Less than 12 months, unrealized losses	(349)	(4,640)
12 months or more, fair value	46,342	4,272
12 months or more, unrealized losses	$ (4,820)	$ (379)
Total, number of holdings \| holding	37	39
Total, fair value	$ 53,360	$ 59,965
Total, unrealized losses	(5,169)	(5,019)
Amortized Cost
Amortized Cost - Total available-for-sale debt securities	58,529	64,984
Fair Value
Fair Value, Total available-for-sale debt securities	53,360	59,965
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 months, fair value	7,018	55,693
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	349	4,640
12 months or more, fair value	46,342	4,272
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 4,820	$ 379
Total, number of holdings \| holding	37	39
Total, fair value	$ 53,360	$ 59,965
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	5,169	5,019
Agency MBS
Debt Securities, Available-for-sale [Abstract]
Amortized Cost - Total available-for-sale debt securities	2,476,218	2,461,337
Unrealized Gains	9	26
Unrealized Losses	(291,320)	(303,339)
Investment securities available-for-sale, at fair value	2,184,907	2,158,024
Less than 12 months, fair value	197,989	1,641,544
Less than 12 months, unrealized losses	(4,220)	(206,412)
12 months or more, fair value	1,986,029	515,206
12 months or more, unrealized losses	$ (287,100)	$ (96,927)
Total, number of holdings \| holding	465	460
Total, fair value	$ 2,184,018	$ 2,156,750
Total, unrealized losses	(291,320)	(303,339)
Amortized Cost
Amortized Cost - Total available-for-sale debt securities	2,476,218	2,461,337
Fair Value
Fair Value, Total available-for-sale debt securities	2,184,907	2,158,024
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 months, fair value	197,989	1,641,544
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	4,220	206,412
12 months or more, fair value	1,986,029	515,206
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 287,100	$ 96,927
Total, number of holdings \| holding	465	460
Total, fair value	$ 2,184,018	$ 2,156,750
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	291,320	303,339
Agency CMBS
Debt Securities, Available-for-sale [Abstract]
Amortized Cost - Total available-for-sale debt securities	2,041,431	1,664,600
Unrealized Gains	44	0
Unrealized Losses	(306,553)	(258,114)
Investment securities available-for-sale, at fair value	1,734,922	1,406,486
Less than 12 months, fair value	345,784	485,333
Less than 12 months, unrealized losses	(10,832)	(68,674)
12 months or more, fair value	1,347,550	921,153
12 months or more, unrealized losses	$ (295,721)	$ (189,440)
Total, number of holdings \| holding	142	132
Total, fair value	$ 1,693,334	$ 1,406,486
Total, unrealized losses	(306,553)	(258,114)
Amortized Cost
Amortized Cost - Total available-for-sale debt securities	2,041,431	1,664,600
Fair Value
Fair Value, Total available-for-sale debt securities	1,734,922	1,406,486
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 months, fair value	345,784	485,333
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	10,832	68,674
12 months or more, fair value	1,347,550	921,153
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 295,721	$ 189,440
Total, number of holdings \| holding	142	132
Total, fair value	$ 1,693,334	$ 1,406,486
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	306,553	258,114
CMBS
Debt Securities, Available-for-sale [Abstract]
Amortized Cost - Total available-for-sale debt securities	907,602	929,588
Unrealized Gains	0	0
Unrealized Losses	(31,483)	(32,948)
Investment securities available-for-sale, at fair value	876,119	896,640
Less than 12 months, fair value	48,536	273,150
Less than 12 months, unrealized losses	(1,439)	(8,982)
12 months or more, fair value	827,583	598,490
12 months or more, unrealized losses	$ (30,044)	$ (23,966)
Total, number of holdings \| holding	51	52
Total, fair value	$ 876,119	$ 871,640
Total, unrealized losses	(31,483)	(32,948)
Amortized Cost
Amortized Cost - Total available-for-sale debt securities	907,602	929,588
Fair Value
Fair Value, Total available-for-sale debt securities	876,119	896,640
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 months, fair value	48,536	273,150
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,439	8,982
12 months or more, fair value	827,583	598,490
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 30,044	$ 23,966
Total, number of holdings \| holding	51	52
Total, fair value	$ 876,119	$ 871,640
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	31,483	32,948
CLO
Debt Securities, Available-for-sale [Abstract]
Amortized Cost - Total available-for-sale debt securities		2,108
Unrealized Gains		0
Unrealized Losses		(1)
Investment securities available-for-sale, at fair value		2,107
12 months or more, fair value		2,107
12 months or more, unrealized losses		$ (1)
Total, number of holdings \| holding		1
Total, fair value		$ 2,107
Total, unrealized losses		(1)
Amortized Cost
Amortized Cost - Total available-for-sale debt securities		2,108
Fair Value
Fair Value, Total available-for-sale debt securities		2,107
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
12 months or more, fair value		2,107
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		$ 1
Total, number of holdings \| holding		1
Total, fair value		$ 2,107
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		1
Corporate debt
Debt Securities, Available-for-sale [Abstract]
Amortized Cost - Total available-for-sale debt securities	712,726	795,999
Unrealized Gains	0	0
Unrealized Losses	(103,967)	(91,587)
Investment securities available-for-sale, at fair value	608,759	704,412
Less than 12 months, fair value	8,805	692,990
Less than 12 months, unrealized losses	(1,297)	(89,692)
12 months or more, fair value	599,954	8,421
12 months or more, unrealized losses	$ (102,670)	$ (1,895)
Total, number of holdings \| holding	92	105
Total, fair value	$ 608,759	$ 701,411
Total, unrealized losses	(103,967)	(91,587)
Amortized Cost
Amortized Cost - Total available-for-sale debt securities	712,726	795,999
Fair Value
Fair Value, Total available-for-sale debt securities	608,759	704,412
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 months, fair value	8,805	692,990
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,297	89,692
12 months or more, fair value	599,954	8,421
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 102,670	$ 1,895
Total, number of holdings \| holding	92	105
Total, fair value	$ 608,759	$ 701,411
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	103,967	91,587
Private label MBS
Debt Securities, Available-for-sale [Abstract]
Amortized Cost - Total available-for-sale debt securities	47,485	48,895
Unrealized Gains	0	0
Unrealized Losses	(4,435)	(4,646)
Investment securities available-for-sale, at fair value	43,050	44,249
Less than 12 months, fair value	11,880	44,249
Less than 12 months, unrealized losses	(1,153)	$ (4,646)
12 months or more, fair value	31,170
12 months or more, unrealized losses	$ (3,282)
Total, number of holdings \| holding	3	3
Total, fair value	$ 43,050	$ 44,249
Total, unrealized losses	(4,435)	(4,646)
Amortized Cost
Amortized Cost - Total available-for-sale debt securities	47,485	48,895
Fair Value
Fair Value, Total available-for-sale debt securities	43,050	44,249
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 months, fair value	11,880	44,249
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,153	$ 4,646
12 months or more, fair value	31,170
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 3,282
Total, number of holdings \| holding	3	3
Total, fair value	$ 43,050	$ 44,249
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	4,435	4,646
Other
Debt Securities, Available-for-sale [Abstract]
Amortized Cost - Total available-for-sale debt securities	9,817	12,548
Unrealized Gains	0	0
Unrealized Losses	(911)	(350)
Investment securities available-for-sale, at fair value	8,906	12,198
Less than 12 months, fair value	4,789	12,198
Less than 12 months, unrealized losses	(211)	$ (350)
12 months or more, fair value	4,117
12 months or more, unrealized losses	$ (700)
Total, number of holdings \| holding	2	4
Total, fair value	$ 8,906	$ 12,198
Total, unrealized losses	(911)	(350)
Amortized Cost
Amortized Cost - Total available-for-sale debt securities	9,817	12,548
Fair Value
Fair Value, Total available-for-sale debt securities	8,906	12,198
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 months, fair value	4,789	12,198
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	211	$ 350
12 months or more, fair value	4,117
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 700
Total, number of holdings \| holding	2	4
Total, fair value	$ 8,906	$ 12,198
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	911	350
Pledged For Borrowings
Fair Value
Available-for-sale securities pledged	4,211,733	1,195,101
Pledged For Municipal Deposits
Fair Value
Available-for-sale securities pledged	$ 2,251,240	$ 2,573,072

Investment Securities (Summar_2

Investment Securities (Summary of Held-to-Maturity Debt Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Schedule of Investments [Line Items]
Amortized Cost	$ 6,944,000		$ 6,564,879
Unrealized Gains	1,322		2,770
Unrealized Losses	(878,640)		(806,196)
Fair Value	6,066,682		5,761,453
Allowance	216	$ 282	182	$ 210	$ 204	$ 214
Net Carrying Value	6,943,784		6,564,697
Interest receivable	24,500		24,200
Moody's, Aaa Rating
Schedule of Investments [Line Items]
Amortized Cost	438,998		485,648
Moody's, Aa1 Rating
Schedule of Investments [Line Items]
Amortized Cost	6,083,346		5,649,733
Moody's, Aa2 Rating
Schedule of Investments [Line Items]
Amortized Cost	254,457		255,235
Moody's, Aa3 Rating
Schedule of Investments [Line Items]
Amortized Cost	116,030		116,870
Moody's, A1 Rating
Schedule of Investments [Line Items]
Amortized Cost	32,949		38,177
Moody's, A2 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		4,165
Moody's, Not Rated
Schedule of Investments [Line Items]
Amortized Cost	14,055		15,051
Agency CMO
Schedule of Investments [Line Items]
Amortized Cost	25,791		28,358
Unrealized Gains	0		0
Unrealized Losses	(2,133)		(2,060)
Fair Value	23,658		26,298
Allowance	0		0
Net Carrying Value	25,791		28,358
Agency CMO \| Moody's, Aaa Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
Agency CMO \| Moody's, Aa1 Rating
Schedule of Investments [Line Items]
Amortized Cost	25,791		28,358
Agency CMO \| Moody's, Aa2 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
Agency CMO \| Moody's, Aa3 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
Agency CMO \| Moody's, A1 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
Agency CMO \| Moody's, A2 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
Agency CMO \| Moody's, Not Rated
Schedule of Investments [Line Items]
Amortized Cost	0		0
Agency MBS
Schedule of Investments [Line Items]
Amortized Cost	2,541,384		2,626,114
Unrealized Gains	524		827
Unrealized Losses	(325,432)		(339,592)
Fair Value	2,216,476		2,287,349
Allowance	0		0
Net Carrying Value	2,541,384		2,626,114
Agency MBS \| Moody's, Aaa Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
Agency MBS \| Moody's, Aa1 Rating
Schedule of Investments [Line Items]
Amortized Cost	2,541,384		2,626,114
Agency MBS \| Moody's, Aa2 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
Agency MBS \| Moody's, Aa3 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
Agency MBS \| Moody's, A1 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
Agency MBS \| Moody's, A2 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
Agency MBS \| Moody's, Not Rated
Schedule of Investments [Line Items]
Amortized Cost	0		0
Agency CMBS
Schedule of Investments [Line Items]
Amortized Cost	3,353,205		2,831,949
Unrealized Gains	0		845
Unrealized Losses	(505,510)		(407,648)
Fair Value	2,847,695		2,425,146
Allowance	0		0
Net Carrying Value	3,353,205		2,831,949
Agency CMBS \| Moody's, Aaa Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
Agency CMBS \| Moody's, Aa1 Rating
Schedule of Investments [Line Items]
Amortized Cost	3,353,205		2,831,949
Agency CMBS \| Moody's, Aa2 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
Agency CMBS \| Moody's, Aa3 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
Agency CMBS \| Moody's, A1 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
Agency CMBS \| Moody's, A2 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
Agency CMBS \| Moody's, Not Rated
Schedule of Investments [Line Items]
Amortized Cost	0		0
Municipal bonds and notes
Schedule of Investments [Line Items]
Amortized Cost	919,112		928,845
Unrealized Gains	798		1,098
Unrealized Losses	(36,263)		(47,183)
Fair Value	883,647		882,760
Allowance	216		182
Net Carrying Value	918,896		928,663
Municipal bonds and notes \| Moody's, Aaa Rating
Schedule of Investments [Line Items]
Amortized Cost	334,490		336,035
Municipal bonds and notes \| Moody's, Aa1 Rating
Schedule of Investments [Line Items]
Amortized Cost	162,966		163,312
Municipal bonds and notes \| Moody's, Aa2 Rating
Schedule of Investments [Line Items]
Amortized Cost	254,457		255,235
Municipal bonds and notes \| Moody's, Aa3 Rating
Schedule of Investments [Line Items]
Amortized Cost	116,030		116,870
Municipal bonds and notes \| Moody's, A1 Rating
Schedule of Investments [Line Items]
Amortized Cost	32,949		38,177
Municipal bonds and notes \| Moody's, A2 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		4,165
Municipal bonds and notes \| Moody's, Not Rated
Schedule of Investments [Line Items]
Amortized Cost	14,055		15,051
CMBS
Schedule of Investments [Line Items]
Amortized Cost	104,508		149,613
Unrealized Gains	0		0
Unrealized Losses	(9,302)		(9,713)
Fair Value	95,206		139,900
Allowance	0		0
Net Carrying Value	104,508		149,613
CMBS \| Moody's, Aaa Rating
Schedule of Investments [Line Items]
Amortized Cost	104,508		149,613
CMBS \| Moody's, Aa1 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
CMBS \| Moody's, Aa2 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
CMBS \| Moody's, Aa3 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
CMBS \| Moody's, A1 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
CMBS \| Moody's, A2 Rating
Schedule of Investments [Line Items]
Amortized Cost	0		0
CMBS \| Moody's, Not Rated
Schedule of Investments [Line Items]
Amortized Cost	$ 0		$ 0

Investment Securities (Sales of

Investment Securities (Sales of Available-for-Sale Debt Securities) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023	Jun. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Proceeds from sale of available-for-sale securities	$ 2,900	$ 398,296	$ 0

Investments Securities (Allowan

Investments Securities (Allowance for Credit Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	$ 282	$ 204	$ 182	$ 214
(Benefit) provision for credit losses	(66)	6	34	(4)
Balance, end of period	$ 216	$ 210	$ 216	$ 210

Investment Securities (Summar_3

Investment Securities (Summary Of Debt Securities Held-to Maturity - Contractual Maturities, Credit Quality and Other Information) (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Amortized Cost
Maturing within 1 year	$ 4,341
After 1 year through 5 years	55,954
After 5 through 10 years	344,666
After 10 years	6,539,039
Amortized Cost	6,944,000	$ 6,564,879
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]
Maturing within 1 year	4,340
After 1 year through 5 years	56,141
After 5 through 10 years	326,276
After 10 years	5,679,925
Fair Value	6,066,682	5,761,453
Held-to-maturity securities pledged	6,340,235	1,857,512
Moody's, Aaa Rating
Amortized Cost
Amortized Cost	438,998	485,648
Moody's, Aa1 Rating
Amortized Cost
Amortized Cost	6,083,346	5,649,733
Moody's, Aa2 Rating
Amortized Cost
Amortized Cost	254,457	255,235
Moody's, Aa3 Rating
Amortized Cost
Amortized Cost	116,030	116,870
Moody's, A1 Rating
Amortized Cost
Amortized Cost	32,949	38,177
Moody's, A2 Rating
Amortized Cost
Amortized Cost	0	4,165
Moody's, A3 Rating
Amortized Cost
Amortized Cost	4,165	0
Moody's, Not Rated
Amortized Cost
Amortized Cost	14,055	15,051
Pledged For Municipal Deposits
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]
Held-to-maturity securities pledged	1,259,307	1,596,777
Pledged For Borrowings
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]
Held-to-maturity securities pledged	5,080,928	260,735
Agency CMO
Amortized Cost
Amortized Cost	25,791	28,358
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]
Fair Value	23,658	26,298
Agency CMO \| Moody's, Aaa Rating
Amortized Cost
Amortized Cost	0	0
Agency CMO \| Moody's, Aa1 Rating
Amortized Cost
Amortized Cost	25,791	28,358
Agency CMO \| Moody's, Aa2 Rating
Amortized Cost
Amortized Cost	0	0
Agency CMO \| Moody's, Aa3 Rating
Amortized Cost
Amortized Cost	0	0
Agency CMO \| Moody's, A1 Rating
Amortized Cost
Amortized Cost	0	0
Agency CMO \| Moody's, A2 Rating
Amortized Cost
Amortized Cost	0	0
Agency CMO \| Moody's, A3 Rating
Amortized Cost
Amortized Cost	0	0
Agency CMO \| Moody's, Not Rated
Amortized Cost
Amortized Cost	0	0
Agency MBS
Amortized Cost
Amortized Cost	2,541,384	2,626,114
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]
Fair Value	2,216,476	2,287,349
Agency MBS \| Moody's, Aaa Rating
Amortized Cost
Amortized Cost	0	0
Agency MBS \| Moody's, Aa1 Rating
Amortized Cost
Amortized Cost	2,541,384	2,626,114
Agency MBS \| Moody's, Aa2 Rating
Amortized Cost
Amortized Cost	0	0
Agency MBS \| Moody's, Aa3 Rating
Amortized Cost
Amortized Cost	0	0
Agency MBS \| Moody's, A1 Rating
Amortized Cost
Amortized Cost	0	0
Agency MBS \| Moody's, A2 Rating
Amortized Cost
Amortized Cost	0	0
Agency MBS \| Moody's, A3 Rating
Amortized Cost
Amortized Cost	0	0
Agency MBS \| Moody's, Not Rated
Amortized Cost
Amortized Cost	0	0
Agency CMBS
Amortized Cost
Amortized Cost	3,353,205	2,831,949
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]
Fair Value	2,847,695	2,425,146
Agency CMBS \| Moody's, Aaa Rating
Amortized Cost
Amortized Cost	0	0
Agency CMBS \| Moody's, Aa1 Rating
Amortized Cost
Amortized Cost	3,353,205	2,831,949
Agency CMBS \| Moody's, Aa2 Rating
Amortized Cost
Amortized Cost	0	0
Agency CMBS \| Moody's, Aa3 Rating
Amortized Cost
Amortized Cost	0	0
Agency CMBS \| Moody's, A1 Rating
Amortized Cost
Amortized Cost	0	0
Agency CMBS \| Moody's, A2 Rating
Amortized Cost
Amortized Cost	0	0
Agency CMBS \| Moody's, A3 Rating
Amortized Cost
Amortized Cost	0	0
Agency CMBS \| Moody's, Not Rated
Amortized Cost
Amortized Cost	0	0
Municipal bonds and notes
Amortized Cost
Amortized Cost	919,112	928,845
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]
Fair Value	883,647	882,760
Municipal bonds and notes \| Moody's, Aaa Rating
Amortized Cost
Amortized Cost	334,490	336,035
Municipal bonds and notes \| Moody's, Aa1 Rating
Amortized Cost
Amortized Cost	162,966	163,312
Municipal bonds and notes \| Moody's, Aa2 Rating
Amortized Cost
Amortized Cost	254,457	255,235
Municipal bonds and notes \| Moody's, Aa3 Rating
Amortized Cost
Amortized Cost	116,030	116,870
Municipal bonds and notes \| Moody's, A1 Rating
Amortized Cost
Amortized Cost	32,949	38,177
Municipal bonds and notes \| Moody's, A2 Rating
Amortized Cost
Amortized Cost	0	4,165
Municipal bonds and notes \| Moody's, A3 Rating
Amortized Cost
Amortized Cost	4,165	0
Municipal bonds and notes \| Moody's, Not Rated
Amortized Cost
Amortized Cost	14,055	15,051
CMBS
Amortized Cost
Amortized Cost	104,508	149,613
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]
Fair Value	95,206	139,900
CMBS \| Moody's, Aaa Rating
Amortized Cost
Amortized Cost	104,508	149,613
CMBS \| Moody's, Aa1 Rating
Amortized Cost
Amortized Cost	0	0
CMBS \| Moody's, Aa2 Rating
Amortized Cost
Amortized Cost	0	0
CMBS \| Moody's, Aa3 Rating
Amortized Cost
Amortized Cost	0	0
CMBS \| Moody's, A1 Rating
Amortized Cost
Amortized Cost	0	0
CMBS \| Moody's, A2 Rating
Amortized Cost
Amortized Cost	0	0
CMBS \| Moody's, A3 Rating
Amortized Cost
Amortized Cost	0	0
CMBS \| Moody's, Not Rated
Amortized Cost
Amortized Cost	$ 0	$ 0

Investment Securities (Narrativ

Investment Securities (Narrative) (Detail) - USD ($)	3 Months Ended	6 Months Ended
Investment Securities (Narrative) (Detail) - USD ($)	Jun. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Schedule of Investments [Line Items]
Interest receivable	$ 37,100,000	$ 37,100,000	$ 36,900,000
Held-to-maturity debt securities	6,944,000,000	6,944,000,000	6,564,879,000
Held-to-maturity investment securities in non-accrual status	0	0	0
Investment securities available-for-sale, at fair value	7,759,341,000	7,759,341,000	$ 7,892,697,000
Equity Securities, FV-NI, Realized Loss	(48,000)	(20,500,000)
Total Loss Recognized, Portion Included In Provision For Credit Losses		3,800,000
Decrease in unrealized losses		18,500,000
Callable
Schedule of Investments [Line Items]
Held-to-maturity debt securities	900,000,000	900,000,000
Investment securities available-for-sale, at fair value	$ 2,600,000,000	$ 2,600,000,000

Loans and Leases (By Portfolio

Loans and Leases (By Portfolio and Class) (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 51,626,048	$ 49,764,426
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	41,878,482	40,103,951
Commercial Portfolio Segment [Member] \| Commercial non-mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	17,255,036	16,392,795
Commercial Portfolio Segment [Member] \| Asset-based
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	1,718,251	1,821,642
Commercial Portfolio Segment [Member] \| Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	13,542,251	12,997,163
Commercial Portfolio Segment [Member] \| Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	7,118,820	6,621,982
Commercial Portfolio Segment [Member] \| Equipment financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	1,535,564	1,628,393
Commercial Portfolio Segment [Member] \| Warehouse lending
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	708,560	641,976
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	9,747,566	9,660,475
Consumer Portfolio Segment [Member] \| Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	8,140,182	7,963,420
Consumer Portfolio Segment [Member] \| Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	1,552,850	1,633,107
Consumer Portfolio Segment [Member] \| Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 54,534	$ 63,948

Loans and Leases (Narrative) (D

Loans and Leases (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unamortized premiums	$ (49.8)		$ (49.8)		$ (68.7)
Interest receivable	253.9		253.9		226.3
Interest on non-accrual loans	6.9	$ 5.2	12.4	$ 8.6
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Write-down		1		10
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Write-down		$ 0.1		$ 0.1
Collateral Pledged \| FHLB \| Asset Pledged as Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	16,700		16,700
Collateral Pledged \| Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired financing receivable	31.9		31.9		43.8
Collateral Pledged \| Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired financing receivable	39.2		39.2		45.2
Collateral Value
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired financing receivable	$ 91.8		$ 91.8		$ 108

Loans and Leases (Summary Of Lo

Loans and Leases (Summary Of Loan And Lease Portfolio Aging By Class Of Loan) (Detail) - USD ($) $ in Thousands	Jul. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Loans and leases		$ 51,626,048	$ 49,764,426
90 or More Days Past Due and Accruing		29	726
Non-accrual		215,243	197,441
Total Past Due and Non-accrual
Financing Receivable, Past Due [Line Items]
Loans and leases		266,590	270,835
30-59 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		20,089	32,379
60-89 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		31,229	40,289
Current
Financing Receivable, Past Due [Line Items]
Loans and leases		51,359,458	49,493,591
Commercial Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans and leases		41,878,482	40,103,951
90 or More Days Past Due and Accruing		28	713
Non-accrual		162,208	143,945
Commercial Portfolio Segment [Member] \| Total Past Due and Non-accrual
Financing Receivable, Past Due [Line Items]
Loans and leases		196,299	196,771
Commercial Portfolio Segment [Member] \| 30-59 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		7,782	17,812
Commercial Portfolio Segment [Member] \| 60-89 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		26,281	34,301
Commercial Portfolio Segment [Member] \| Current
Financing Receivable, Past Due [Line Items]
Loans and leases		41,682,183	39,907,180
Loans that had either reached contractual maturity or experienced administrative delays		22,600
Commercial Portfolio Segment [Member] \| Current \| Subsequent Event
Financing Receivable, Past Due [Line Items]
Loans that had either reached contractual maturity or experienced administrative delays, resolved	$ 19,000
Commercial Portfolio Segment [Member] \| Commercial non-mortgage
Financing Receivable, Past Due [Line Items]
Loans and leases		17,255,036	16,392,795
90 or More Days Past Due and Accruing		0	645
Non-accrual		95,332	71,884
Commercial Portfolio Segment [Member] \| Commercial non-mortgage \| Total Past Due and Non-accrual
Financing Receivable, Past Due [Line Items]
Loans and leases		122,546	81,784
Commercial Portfolio Segment [Member] \| Commercial non-mortgage \| 30-59 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		2,550	8,434
Commercial Portfolio Segment [Member] \| Commercial non-mortgage \| 60-89 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		24,664	821
Commercial Portfolio Segment [Member] \| Commercial non-mortgage \| Current
Financing Receivable, Past Due [Line Items]
Loans and leases		17,132,490	16,311,011
Commercial Portfolio Segment [Member] \| Asset-based
Financing Receivable, Past Due [Line Items]
Loans and leases		1,718,251	1,821,642
90 or More Days Past Due and Accruing		0	0
Non-accrual		9,428	20,024
Commercial Portfolio Segment [Member] \| Asset-based \| Total Past Due and Non-accrual
Financing Receivable, Past Due [Line Items]
Loans and leases		9,428	25,945
Commercial Portfolio Segment [Member] \| Asset-based \| 30-59 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		0	5,921
Commercial Portfolio Segment [Member] \| Asset-based \| 60-89 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		0	0
Commercial Portfolio Segment [Member] \| Asset-based \| Current
Financing Receivable, Past Due [Line Items]
Loans and leases		1,708,823	1,795,697
Commercial Portfolio Segment [Member] \| Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans and leases		13,542,251	12,997,163
90 or More Days Past Due and Accruing		0	68
Non-accrual		40,272	39,057
Commercial Portfolio Segment [Member] \| Commercial real estate \| Total Past Due and Non-accrual
Financing Receivable, Past Due [Line Items]
Loans and leases		41,271	64,111
Commercial Portfolio Segment [Member] \| Commercial real estate \| 30-59 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		750	1,494
Commercial Portfolio Segment [Member] \| Commercial real estate \| 60-89 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		249	23,492
Commercial Portfolio Segment [Member] \| Commercial real estate \| Current
Financing Receivable, Past Due [Line Items]
Loans and leases		13,500,980	12,933,052
Commercial Portfolio Segment [Member] \| Multi-family
Financing Receivable, Past Due [Line Items]
Loans and leases		7,118,820	6,621,982
90 or More Days Past Due and Accruing		0	0
Non-accrual		5,823	636
Commercial Portfolio Segment [Member] \| Multi-family \| Total Past Due and Non-accrual
Financing Receivable, Past Due [Line Items]
Loans and leases		6,846	1,793
Commercial Portfolio Segment [Member] \| Multi-family \| 30-59 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		1,023	1,157
Commercial Portfolio Segment [Member] \| Multi-family \| 60-89 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		0	0
Commercial Portfolio Segment [Member] \| Multi-family \| Current
Financing Receivable, Past Due [Line Items]
Loans and leases		7,111,974	6,620,189
Commercial Portfolio Segment [Member] \| Equipment financing
Financing Receivable, Past Due [Line Items]
Loans and leases		1,535,564	1,628,393
90 or More Days Past Due and Accruing		28	0
Non-accrual		11,353	12,344
Commercial Portfolio Segment [Member] \| Equipment financing \| Total Past Due and Non-accrual
Financing Receivable, Past Due [Line Items]
Loans and leases		16,208	23,138
Commercial Portfolio Segment [Member] \| Equipment financing \| 30-59 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		3,459	806
Commercial Portfolio Segment [Member] \| Equipment financing \| 60-89 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		1,368	9,988
Commercial Portfolio Segment [Member] \| Equipment financing \| Current
Financing Receivable, Past Due [Line Items]
Loans and leases		1,519,356	1,605,255
Commercial Portfolio Segment [Member] \| Warehouse lending
Financing Receivable, Past Due [Line Items]
Loans and leases		708,560	641,976
90 or More Days Past Due and Accruing		0	0
Non-accrual		0	0
Commercial Portfolio Segment [Member] \| Warehouse lending \| Total Past Due and Non-accrual
Financing Receivable, Past Due [Line Items]
Loans and leases		0	0
Commercial Portfolio Segment [Member] \| Warehouse lending \| 30-59 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		0	0
Commercial Portfolio Segment [Member] \| Warehouse lending \| 60-89 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		0	0
Commercial Portfolio Segment [Member] \| Warehouse lending \| Current
Financing Receivable, Past Due [Line Items]
Loans and leases		708,560	641,976
Consumer Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Loans and leases		9,747,566	9,660,475
90 or More Days Past Due and Accruing		1	13
Non-accrual		53,035	53,496
Consumer Portfolio Segment [Member] \| Total Past Due and Non-accrual
Financing Receivable, Past Due [Line Items]
Loans and leases		70,291	74,064
Consumer Portfolio Segment [Member] \| 30-59 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		12,307	14,567
Consumer Portfolio Segment [Member] \| 60-89 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		4,948	5,988
Consumer Portfolio Segment [Member] \| Current
Financing Receivable, Past Due [Line Items]
Loans and leases		9,677,275	9,586,411
Consumer Portfolio Segment [Member] \| Residential
Financing Receivable, Past Due [Line Items]
Loans and leases		8,140,182	7,963,420
90 or More Days Past Due and Accruing		0	0
Non-accrual		26,750	25,424
Consumer Portfolio Segment [Member] \| Residential \| Total Past Due and Non-accrual
Financing Receivable, Past Due [Line Items]
Loans and leases		37,264	36,753
Consumer Portfolio Segment [Member] \| Residential \| 30-59 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		8,596	8,246
Consumer Portfolio Segment [Member] \| Residential \| 60-89 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		1,918	3,083
Consumer Portfolio Segment [Member] \| Residential \| Current
Financing Receivable, Past Due [Line Items]
Loans and leases		8,102,918	7,926,667
Consumer Portfolio Segment [Member] \| Home equity
Financing Receivable, Past Due [Line Items]
Loans and leases		1,552,850	1,633,107
90 or More Days Past Due and Accruing		0	0
Non-accrual		26,213	27,924
Consumer Portfolio Segment [Member] \| Home equity \| Total Past Due and Non-accrual
Financing Receivable, Past Due [Line Items]
Loans and leases		32,444	36,037
Consumer Portfolio Segment [Member] \| Home equity \| 30-59 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		3,305	5,293
Consumer Portfolio Segment [Member] \| Home equity \| 60-89 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		2,926	2,820
Consumer Portfolio Segment [Member] \| Home equity \| Current
Financing Receivable, Past Due [Line Items]
Loans and leases		1,520,406	1,597,070
Consumer Portfolio Segment [Member] \| Other consumer
Financing Receivable, Past Due [Line Items]
Loans and leases		54,534	63,948
90 or More Days Past Due and Accruing		1	13
Non-accrual		72	148
Consumer Portfolio Segment [Member] \| Other consumer \| Total Past Due and Non-accrual
Financing Receivable, Past Due [Line Items]
Loans and leases		583	1,274
Consumer Portfolio Segment [Member] \| Other consumer \| 30-59 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		406	1,028
Consumer Portfolio Segment [Member] \| Other consumer \| 60-89 Days Past Due and Accruing
Financing Receivable, Past Due [Line Items]
Loans and leases		104	85
Consumer Portfolio Segment [Member] \| Other consumer \| Current
Financing Receivable, Past Due [Line Items]
Loans and leases		$ 53,951	$ 62,674

Loans and Leases (Nonaccrual) (

Loans and Leases (Nonaccrual) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	$ 215,243	$ 197,441
Non-accrual with No Allowance	49,771	42,059
Commercial Portfolio Segment [Member]
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	162,208	143,945
Non-accrual with No Allowance	25,243	16,419
Commercial Portfolio Segment [Member] \| Commercial non-mortgage
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	95,332	71,884
Non-accrual with No Allowance	14,097	12,598
Commercial Portfolio Segment [Member] \| Asset-based
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	9,428	20,024
Non-accrual with No Allowance	1,330	1,491
Commercial Portfolio Segment [Member] \| Commercial real estate
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	40,272	39,057
Non-accrual with No Allowance	1,461	90
Commercial Portfolio Segment [Member] \| Multi-family
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	5,823	636
Non-accrual with No Allowance	5,823	0
Commercial Portfolio Segment [Member] \| Equipment financing
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	11,353	12,344
Non-accrual with No Allowance	2,532	2,240
Commercial Portfolio Segment [Member] \| Warehouse lending
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	0	0
Consumer Portfolio Segment [Member]
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	53,035	53,496
Non-accrual with No Allowance	24,528	25,640
Consumer Portfolio Segment [Member] \| Residential
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	26,750	25,424
Non-accrual with No Allowance	10,656	10,442
Consumer Portfolio Segment [Member] \| Home equity
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	26,213	27,924
Non-accrual with No Allowance	13,868	15,193
Consumer Portfolio Segment [Member] \| Other consumer
Financing Receivable, Nonaccrual [Line Items]
Non-accrual	72	148
Non-accrual with No Allowance	$ 4	$ 5

Loans and Leases (Activity In A

Loans and Leases (Activity In Allowance For Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance, end of period	$ 628,911	$ 571,499	$ 628,911	$ 571,499	$ 613,914		$ 569,371
Provision (benefit) for credit losses	35,249	11,728	73,070	200,796
Initial allowance for PCD loans and leases			0	88,045
Recoveries	2,778	10,053	5,765	13,492
Charge-offs	(23,030)	(19,653)	(50,538)	(32,021)
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance, end of period						$ 5,873		$ 0
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance, end of period	572,653	511,745	572,653	511,745	554,750		510,696
Provision (benefit) for credit losses	38,824	12,041	77,581	196,368
Initial allowance for PCD loans and leases			0	78,376
Recoveries	1,024	7,765	2,598	9,129
Charge-offs	(21,945)	(18,757)	(48,355)	(30,005)
Commercial Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance, end of period						7,704		0
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance, end of period	56,258	59,754	56,258	59,754	$ 59,164		$ 58,675
Provision (benefit) for credit losses	(3,575)	(313)	(4,511)	4,428
Initial allowance for PCD loans and leases			0	9,669
Recoveries	1,754	2,288	3,167	4,363
Charge-offs	$ (1,085)	$ (896)	$ (2,183)	$ (2,016)
Consumer Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance, end of period						$ (1,831)		$ 0

Loans and Leases (Allowance For

Loans and Leases (Allowance For Loan And Lease Losses By Portfolio Segment) (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Jan. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period				$ 594,741	$ 301,187
Initial allowance for PCD loans and leases				0	88,045
Provision (benefit)		$ 35,249	$ 11,728	73,070	200,796
Charge-offs		(23,030)	(19,653)	(50,538)	(32,021)
Recoveries		2,778	10,053	5,765	13,492
Balance, end of period		628,911	571,499	628,911	571,499		$ 594,741		$ 301,187
ALLL, Individually evaluated for impairment		53,728	43,297	53,728	43,297
ALLL, Collectively evaluated for impairment		575,183	528,202	575,183	528,202
Balance, end of period		628,911	571,499	628,911	571,499	$ 613,914		$ 569,371
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, end of period							5,873		0
PCD loans \| Sterling
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge-offs	$ (48,300)
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period				533,125	257,877
Initial allowance for PCD loans and leases				0	78,376
Provision (benefit)		38,824	12,041	77,581	196,368
Charge-offs		(21,945)	(18,757)	(48,355)	(30,005)
Recoveries		1,024	7,765	2,598	9,129
Balance, end of period		572,653	511,745	572,653	511,745		533,125		257,877
ALLL, Individually evaluated for impairment		46,215	38,847	46,215	38,847
ALLL, Collectively evaluated for impairment		526,438	472,898	526,438	472,898
Balance, end of period		572,653	511,745	572,653	511,745	554,750		510,696
Commercial Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, end of period							7,704		0
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period				61,616	43,310
Initial allowance for PCD loans and leases				0	9,669
Provision (benefit)		(3,575)	(313)	(4,511)	4,428
Charge-offs		(1,085)	(896)	(2,183)	(2,016)
Recoveries		1,754	2,288	3,167	4,363
Balance, end of period		56,258	59,754	56,258	59,754		61,616		43,310
ALLL, Individually evaluated for impairment		7,513	4,450	7,513	4,450
ALLL, Collectively evaluated for impairment		48,745	55,304	48,745	55,304
Balance, end of period		$ 56,258	$ 59,754	$ 56,258	$ 59,754	$ 59,164		$ 58,675
Consumer Portfolio Segment [Member] \| Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, end of period							$ (1,831)		$ 0

Loans and Leases (Credit Qualit

Loans and Leases (Credit Quality Indicators) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases	$ 51,626,048	$ 49,764,426
Commercial Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	4,431,409	11,169,564
Year two	10,822,626	5,661,880
Year three	4,891,410	3,487,488
Year four	3,011,747	3,539,935
Year five	2,997,467	2,445,305
Prior	6,987,184	5,530,594
Revolving Loans Amortized Cost Basis	8,736,639	8,269,185
Loans and leases	41,878,482	40,103,951
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	48,355
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	25,843
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	14,426
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	4,324
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	3,109
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	329
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	324
Commercial Portfolio Segment [Member] \| Commercial non-mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	1,721,321	5,287,261
Year two	4,958,574	1,979,460
Year three	1,630,735	1,057,097
Year four	859,551	829,845
Year five	710,317	678,464
Prior	1,126,652	804,822
Revolving Loans Amortized Cost Basis	6,247,886	5,755,846
Loans and leases	17,255,036	16,392,795
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	5,552
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	3,675
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	178
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	511
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	535
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	329
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	324
Commercial Portfolio Segment [Member] \| Asset-based
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	10,964	19,659
Year two	8,284	3,901
Year three	0	9,424
Year four	1,565	15,904
Year five	10,757	5,163
Prior	57,219	55,553
Revolving Loans Amortized Cost Basis	1,629,462	1,712,038
Loans and leases	1,718,251	1,821,642
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	13,189
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	13,189
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	0
Commercial Portfolio Segment [Member] \| Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	1,505,160	3,443,032
Year two	3,592,062	2,258,126
Year three	1,955,759	1,563,665
Year four	1,403,466	1,674,603
Year five	1,407,426	1,153,170
Prior	3,527,648	2,805,735
Revolving Loans Amortized Cost Basis	150,730	98,832
Loans and leases	13,542,251	12,997,163
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	28,540
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	21,094
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	1,059
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	3,813
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	2,574
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	0
Commercial Portfolio Segment [Member] \| Multi-family
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	992,039	2,030,657
Year two	1,911,526	1,057,705
Year three	1,003,245	507,447
Year four	472,691	694,161
Year five	607,867	497,552
Prior	2,131,451	1,773,967
Revolving Loans Amortized Cost Basis	1	60,493
Loans and leases	7,118,820	6,621,982
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	1,033
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	1,033
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	0
Commercial Portfolio Segment [Member] \| Equipment financing
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	201,925	388,955
Year two	352,180	362,688
Year three	301,671	349,855
Year four	274,474	325,422
Year five	261,100	110,956
Prior	144,214	90,517
Revolving Loans Amortized Cost Basis	0	0
Loans and leases	1,535,564	1,628,393
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	41
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	41
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	0
Commercial Portfolio Segment [Member] \| Warehouse lending
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	0
Year five	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	708,560	641,976
Loans and leases	708,560	641,976
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	0
Commercial Portfolio Segment [Member] \| Pass \| Commercial non-mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	1,672,800	5,154,781
Year two	4,814,327	1,952,158
Year three	1,535,033	965,975
Year four	814,981	792,977
Year five	649,366	593,460
Prior	1,081,197	780,200
Revolving Loans Amortized Cost Basis	6,099,138	5,670,532
Loans and leases	16,666,842	15,910,083
Commercial Portfolio Segment [Member] \| Pass \| Asset-based
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	10,964	19,659
Year two	8,284	3,901
Year three	0	9,424
Year four	1,565	14,413
Year five	9,427	5,163
Prior	56,838	55,553
Revolving Loans Amortized Cost Basis	1,487,079	1,551,250
Loans and leases	1,574,157	1,659,363
Commercial Portfolio Segment [Member] \| Pass \| Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	1,488,568	3,420,635
Year two	3,589,054	2,246,672
Year three	1,912,030	1,556,185
Year four	1,356,330	1,605,869
Year five	1,329,052	1,058,730
Prior	3,397,728	2,681,052
Revolving Loans Amortized Cost Basis	149,322	97,832
Loans and leases	13,222,084	12,666,975
Commercial Portfolio Segment [Member] \| Pass \| Multi-family
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	992,039	1,992,980
Year two	1,911,526	1,057,705
Year three	1,003,245	507,065
Year four	449,847	694,066
Year five	607,503	444,564
Prior	2,077,167	1,748,337
Revolving Loans Amortized Cost Basis	1	51,655
Loans and leases	7,041,328	6,496,372
Commercial Portfolio Segment [Member] \| Pass \| Equipment financing
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	201,925	388,641
Year two	348,890	345,792
Year three	284,909	331,419
Year four	253,271	308,441
Year five	243,348	98,874
Prior	124,924	83,264
Revolving Loans Amortized Cost Basis	0	0
Loans and leases	1,457,267	1,556,431
Commercial Portfolio Segment [Member] \| Pass \| Warehouse lending
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	0
Year five	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	708,560	641,976
Loans and leases	708,560	641,976
Commercial Portfolio Segment [Member] \| Special mention \| Commercial non-mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	24,849	104,277
Year two	83,936	15,598
Year three	80,312	21,168
Year four	12,292	263
Year five	15,636	14,370
Prior	9,017	7,770
Revolving Loans Amortized Cost Basis	83,731	40,142
Loans and leases	309,773	203,588
Commercial Portfolio Segment [Member] \| Special mention \| Asset-based
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	0
Year five	0	0
Prior	381	0
Revolving Loans Amortized Cost Basis	71,033	80,476
Loans and leases	71,414	80,476
Commercial Portfolio Segment [Member] \| Special mention \| Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	656	21,878
Year two	2,496	8,995
Year three	27,071	7,264
Year four	31,689	37,570
Year five	23,739	47,419
Prior	58,074	66,652
Revolving Loans Amortized Cost Basis	1,408	1,000
Loans and leases	145,133	190,778
Commercial Portfolio Segment [Member] \| Special mention \| Multi-family
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	37,677
Year two	0	0
Year three	0	0
Year four	22,471	95
Year five	364	40,307
Prior	41,458	726
Revolving Loans Amortized Cost Basis	0	8,838
Loans and leases	64,293	87,643
Commercial Portfolio Segment [Member] \| Special mention \| Equipment financing
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	185
Year three	11,296	0
Year four	8,751	11,965
Year five	13,031	6,775
Prior	7,207	25
Revolving Loans Amortized Cost Basis	0	0
Loans and leases	40,285	18,950
Commercial Portfolio Segment [Member] \| Substandard \| Commercial non-mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	23,672	28,203
Year two	60,311	11,704
Year three	15,390	69,954
Year four	32,278	36,604
Year five	45,315	70,634
Prior	36,438	16,852
Revolving Loans Amortized Cost Basis	65,017	41,917
Loans and leases	278,421	275,868
Commercial Portfolio Segment [Member] \| Substandard \| Asset-based
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	1,491
Year five	1,330	0
Prior	0	0
Revolving Loans Amortized Cost Basis	71,350	80,312
Loans and leases	72,680	81,803
Commercial Portfolio Segment [Member] \| Substandard \| Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	15,936	519
Year two	512	2,459
Year three	16,658	216
Year four	15,447	31,163
Year five	54,635	47,021
Prior	71,846	57,997
Revolving Loans Amortized Cost Basis	0	0
Loans and leases	175,034	139,375
Commercial Portfolio Segment [Member] \| Substandard \| Multi-family
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	0	0
Year three	0	382
Year four	373	0
Year five	0	12,681
Prior	12,826	24,904
Revolving Loans Amortized Cost Basis	0	0
Loans and leases	13,199	37,967
Commercial Portfolio Segment [Member] \| Substandard \| Equipment financing
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	314
Year two	3,290	16,711
Year three	5,466	18,436
Year four	12,452	5,016
Year five	4,721	5,307
Prior	12,083	7,228
Revolving Loans Amortized Cost Basis	0	0
Loans and leases	38,012	53,012
Commercial Portfolio Segment [Member] \| Doubtful \| Commercial non-mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Year one		0
Year two		0
Year three		0
Year four		1
Year five		0
Prior		0
Revolving Loans Amortized Cost Basis		3,255
Loans and leases		3,256
Commercial Portfolio Segment [Member] \| Doubtful \| Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Year one		0
Year two		0
Year three		0
Year four		1
Year five		0
Prior		34
Revolving Loans Amortized Cost Basis		0
Loans and leases		35
Consumer Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	420,189	2,042,000
Year two	2,050,323	2,399,022
Year three	2,354,382	960,281
Year four	928,936	454,877
Year five	456,199	126,240
Prior	2,360,823	2,409,520
Revolving Loans Amortized Cost Basis	1,176,714	1,268,535
Loans and leases	9,747,566	9,660,475
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	2,183
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	1,013
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	232
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	176
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	5
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	7
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	750
Consumer Portfolio Segment [Member] \| Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	380,941	1,965,372
Year two	1,976,477	2,304,919
Year three	2,265,497	901,353
Year four	875,081	424,742
Year five	431,257	94,152
Prior	2,210,929	2,272,882
Revolving Loans Amortized Cost Basis	0	0
Loans and leases	8,140,182	7,963,420
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	275
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	273
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	2
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	0
Consumer Portfolio Segment [Member] \| Residential \| 800+
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	83,586	527,408
Year two	711,811	954,568
Year three	1,063,248	469,518
Year four	438,330	160,596
Year five	158,719	28,361
Prior	967,612	997,409
Revolving Loans Amortized Cost Basis	0	0
Loans and leases	3,423,306	3,137,860
Consumer Portfolio Segment [Member] \| Residential \| 740-799
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	215,262	963,026
Year two	834,914	946,339
Year three	843,118	311,295
Year four	331,838	111,913
Year five	101,576	43,684
Prior	697,162	689,771
Revolving Loans Amortized Cost Basis	0	0
Loans and leases	3,023,870	3,066,028
Consumer Portfolio Segment [Member] \| Residential \| 670 to 739
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	75,016	381,515
Year two	334,227	350,671
Year three	302,307	103,999
Year four	87,497	62,365
Year five	56,903	18,451
Prior	366,022	384,687
Revolving Loans Amortized Cost Basis	0	0
Loans and leases	1,221,972	1,301,688
Consumer Portfolio Segment [Member] \| Residential \| 580-669
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	6,654	40,959
Year two	49,107	49,648
Year three	52,155	14,484
Year four	14,510	5,836
Year five	5,893	2,357
Prior	124,153	138,107
Revolving Loans Amortized Cost Basis	0	0
Loans and leases	252,472	251,391
Consumer Portfolio Segment [Member] \| Residential \| 579 and below
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	423	52,464
Year two	46,418	3,693
Year three	4,669	2,057
Year four	2,906	84,032
Year five	108,166	1,299
Prior	55,980	62,908
Revolving Loans Amortized Cost Basis	0	0
Loans and leases	218,562	206,453
Consumer Portfolio Segment [Member] \| Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	37,654	73,888
Year two	71,666	90,440
Year three	85,627	53,579
Year four	50,694	21,441
Year five	19,779	29,650
Prior	148,638	136,025
Revolving Loans Amortized Cost Basis	1,138,792	1,228,084
Loans and leases	1,552,850	1,633,107
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	494
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	494
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	0
Consumer Portfolio Segment [Member] \| Home equity \| 800+
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	13,079	25,475
Year two	27,754	35,129
Year three	35,706	25,612
Year four	26,457	7,578
Year five	7,471	12,545
Prior	61,655	55,352
Revolving Loans Amortized Cost Basis	414,584	465,318
Loans and leases	586,706	627,009
Consumer Portfolio Segment [Member] \| Home equity \| 740-799
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	13,347	26,743
Year two	24,237	35,178
Year three	30,998	17,621
Year four	16,481	8,111
Year five	6,992	7,765
Prior	38,169	32,270
Revolving Loans Amortized Cost Basis	374,503	398,692
Loans and leases	504,727	526,380
Consumer Portfolio Segment [Member] \| Home equity \| 670 to 739
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	10,007	18,396
Year two	16,092	16,679
Year three	15,479	8,175
Year four	5,914	3,635
Year five	3,724	7,614
Prior	30,021	30,060
Revolving Loans Amortized Cost Basis	248,766	259,646
Loans and leases	330,003	344,205
Consumer Portfolio Segment [Member] \| Home equity \| 580-669
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	943	2,848
Year two	2,931	3,068
Year three	2,872	1,520
Year four	1,246	1,456
Year five	1,200	1,163
Prior	11,552	13,607
Revolving Loans Amortized Cost Basis	71,317	76,614
Loans and leases	92,061	100,276
Consumer Portfolio Segment [Member] \| Home equity \| 579 and below
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	278	426
Year two	652	386
Year three	572	651
Year four	596	661
Year five	392	563
Prior	7,241	4,736
Revolving Loans Amortized Cost Basis	29,622	27,814
Loans and leases	39,353	35,237
Consumer Portfolio Segment [Member] \| Consumer Loan
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	1,594	2,740
Year two	2,180	3,663
Year three	3,258	5,349
Year four	3,161	8,694
Year five	5,163	2,438
Prior	1,256	613
Revolving Loans Amortized Cost Basis	37,922	40,451
Loans and leases	54,534	63,948
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	1,414
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan, Writeoff	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff	246
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	232
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	176
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	3
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	7
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff	750
Consumer Portfolio Segment [Member] \| Consumer Loan \| 800+
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	386	495
Year two	516	218
Year three	260	544
Year four	402	1,045
Year five	622	247
Prior	180	56
Revolving Loans Amortized Cost Basis	22,092	19,196
Loans and leases	24,458	21,801
Consumer Portfolio Segment [Member] \| Consumer Loan \| 740-799
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	704	888
Year two	715	2,624
Year three	2,354	1,959
Year four	1,011	2,494
Year five	1,515	941
Prior	581	364
Revolving Loans Amortized Cost Basis	4,443	12,218
Loans and leases	11,323	21,488
Consumer Portfolio Segment [Member] \| Consumer Loan \| 670 to 739
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	377	977
Year two	640	603
Year three	430	2,480
Year four	1,447	4,238
Year five	2,403	1,041
Prior	362	118
Revolving Loans Amortized Cost Basis	8,350	6,107
Loans and leases	14,009	15,564
Consumer Portfolio Segment [Member] \| Consumer Loan \| 580-669
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	57	211
Year two	178	117
Year three	132	337
Year four	280	801
Year five	566	173
Prior	91	54
Revolving Loans Amortized Cost Basis	1,221	2,223
Loans and leases	2,525	3,916
Consumer Portfolio Segment [Member] \| Consumer Loan \| 579 and below
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	70	169
Year two	131	101
Year three	82	29
Year four	21	116
Year five	57	36
Prior	42	21
Revolving Loans Amortized Cost Basis	1,816	707
Loans and leases	$ 2,219	$ 1,179

Loans and Leases (Summary Of Th

Loans and Leases (Summary Of The Recorded Investment Of Company's TDRs) (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022	Jun. 30, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total recorded investment of TDRs				$ 194,822
Additional funds committed to borrowers in TDR status				1,724
Specific reserves for TDRs included in the ACL on loans and leases:	$ 571,499	$ 571,499	$ 628,911	594,741	$ 301,187
Commercial Portfolio Segment [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Specific reserves for TDRs included in the ACL on loans and leases:	511,745	511,745	572,653	533,125	257,877
Write-down	(1,000)	(10,000)
Consumer Portfolio Segment [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Specific reserves for TDRs included in the ACL on loans and leases:	59,754	59,754	$ 56,258	61,616	$ 43,310
Write-down	$ (100)	$ (100)
Performing Financial Instruments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total recorded investment of TDRs				110,868
Nonperforming Financial Instruments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total recorded investment of TDRs				83,954
Nonperforming Financial Instruments \| Troubled Debt Restructures \| Commercial Portfolio Segment [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Specific reserves for TDRs included in the ACL on loans and leases:				14,578
Nonperforming Financial Instruments \| Troubled Debt Restructures \| Consumer Portfolio Segment [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Specific reserves for TDRs included in the ACL on loans and leases:				$ 3,559

Loans and Leases (Information o

Loans and Leases (Information on How Loans and Leases were Modified as a TDR) (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($) loan	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loan		25		52
Recorded Investment	$ 50,556	$ 26,826	$ 80,393	$ 30,447
Term extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	25,758		55,531
Adjusted interest rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 64		$ 64
Commercial Portfolio Segment [Member] \| Term extension \| Commercial non-mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loan		0		2
Recorded Investment		$ 0		$ 97
Commercial Portfolio Segment [Member] \| Combination - Term extension and interest rate reduction \| Commercial non-mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loan		3		5
Recorded Investment		$ 351		$ 443
Commercial Portfolio Segment [Member] \| Other \| Commercial non-mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loan		1		1
Recorded Investment		$ 22,964		$ 22,964
Commercial Portfolio Segment [Member] \| Other \| Equipment financing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loan		1		1
Recorded Investment		$ 1,157		$ 1,157
Consumer Portfolio Segment [Member] \| Term extension \| Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loan		1		1
Recorded Investment		$ 893		$ 893
Consumer Portfolio Segment [Member] \| Combination - Term extension and interest rate reduction \| Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loan		7		11
Recorded Investment		$ 680		$ 724
Consumer Portfolio Segment [Member] \| Other \| Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loan		2		6
Recorded Investment		$ 308		$ 2,762
Consumer Portfolio Segment [Member] \| Other \| Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loan		9		24
Recorded Investment		$ 399		$ 1,333
Consumer Portfolio Segment [Member] \| Adjusted interest rate \| Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loan		1		1
Recorded Investment		$ 74		$ 74

Loans and Leases - Troubled Deb

Loans and Leases - Troubled Debt Restructurings on Financing Receivables (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 50,556	$ 26,826	$ 80,393	$ 30,447
% of Total Class	0.10%		0.20%
Interest Receivable	$ 200		$ 200
Loans and leases modified as TDRs within previous 12 months for which there was a payment default \| loan				0
Commercial non-mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 34,429		$ 60,906
% of Total Class	0.20%		0.40%
Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 11,693		$ 14,933
% of Total Class	0.10%		0.10%
Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 261		$ 381
% of Total Class	0%		0%
Equipment financing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 1,408		$ 1,408
% of Total Class	0.10%		0.10%
Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 2,765		$ 2,765
% of Total Class	0%		0%
Adjusted interest rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 64		$ 64
Adjusted interest rate \| Commercial non-mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 0		$ 0
Reduced weighted average interest rate	0.50%		0.50%
Adjusted interest rate \| Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 0		$ 0
Adjusted interest rate \| Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	64		64
Adjusted interest rate \| Equipment financing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	0		0
Adjusted interest rate \| Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	0		0
Term extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	25,758		55,531
Term extension \| Commercial non-mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 13,025		$ 39,502
Extended term	1 year 9 months 18 days		10 months 24 days
Term extension \| Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 11,522		$ 14,762
Extended term	1 year		1 year 3 months 18 days
Term extension \| Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 52		$ 108
Extended term	14 years 4 months 24 days		11 years 6 months
Term extension \| Equipment financing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 0		$ 0
Term extension \| Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 1,159		$ 1,159
Extended term	1 year 4 months 24 days		1 year 4 months 24 days
Extended Maturity And Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 481		$ 545
Extended Maturity And Interest Rate Reduction \| Commercial non-mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	336		336
Extended Maturity And Interest Rate Reduction \| Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	0		0
Extended Maturity And Interest Rate Reduction \| Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	145		209
Extended Maturity And Interest Rate Reduction \| Equipment financing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	0		0
Extended Maturity And Interest Rate Reduction \| Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	0		0
Extended Maturity and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	11,520		11,520
Extended Maturity and Interest Rate Reduction \| Commercial non-mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 11,520		$ 11,520
Reduced weighted average interest rate	1.30%		1.30%
Extended term	3 years 8 months 12 days		3 years 8 months 12 days
Extended Maturity and Interest Rate Reduction \| Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 0		$ 0
Extended Maturity and Interest Rate Reduction \| Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 0		$ 0
Reduced weighted average interest rate	1.40%		1.40%
Extended term	16 years		12 years 8 months 12 days
Extended Maturity and Interest Rate Reduction \| Equipment financing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 0		$ 0
Extended Maturity and Interest Rate Reduction \| Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	0		0
Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	12,733		12,733
Payment Delay \| Commercial non-mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	9,548		9,548
Payment Delay \| Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	171		171
Payment Delay \| Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	0		0
Payment Delay \| Equipment financing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	1,408		1,408
Payment Delay \| Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 1,606		$ 1,606

Loans and Leases - Aging of Loa

Loans and Leases - Aging of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual	$ 215,243	$ 197,441
Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	80,393
Non-accrual	38,930
Current \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	41,292
30-59 Days Past Due and Accruing \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	171
60-89 Days Past Due and Accruing \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0
Financial Asset, Equal to or Greater than 90 Days Past Due \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0
Commercial non-mortgage \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	60,906
Non-accrual	35,900
Commercial non-mortgage \| Current \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	25,006
Commercial non-mortgage \| 30-59 Days Past Due and Accruing \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0
Commercial non-mortgage \| 60-89 Days Past Due and Accruing \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0
Commercial non-mortgage \| Financial Asset, Equal to or Greater than 90 Days Past Due \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0
Commercial real estate \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	14,933
Non-accrual	0
Commercial real estate \| Current \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	14,762
Commercial real estate \| 30-59 Days Past Due and Accruing \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	171
Commercial real estate \| 60-89 Days Past Due and Accruing \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0
Commercial real estate \| Financial Asset, Equal to or Greater than 90 Days Past Due \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0
Equipment financing \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	1,408
Non-accrual	0
Equipment financing \| Current \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	1,408
Equipment financing \| 30-59 Days Past Due and Accruing \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0
Equipment financing \| 60-89 Days Past Due and Accruing \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0
Equipment financing \| Financial Asset, Equal to or Greater than 90 Days Past Due \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0
Residential \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	2,765
Non-accrual	2,765
Residential \| Current \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0
Residential \| 30-59 Days Past Due and Accruing \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0
Residential \| 60-89 Days Past Due and Accruing \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0
Residential \| Financial Asset, Equal to or Greater than 90 Days Past Due \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0
Home equity \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	381
Non-accrual	265
Home equity \| Current \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	116
Home equity \| 30-59 Days Past Due and Accruing \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0
Home equity \| 60-89 Days Past Due and Accruing \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0
Home equity \| Financial Asset, Equal to or Greater than 90 Days Past Due \| Aging Loan Modifications
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 0

Loans and Leases (Details)

Loans and Leases (Details)	3 Months Ended	6 Months Ended
Loans and Leases (Details)	Jun. 30, 2023	Jun. 30, 2023
Adjusted interest rate \| Commercial non-mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Reduced weighted average interest rate	0.50%	0.50%
Term extension \| Commercial non-mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Extended term	1 year 9 months 18 days	10 months 24 days
Term extension \| Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Extended term	1 year	1 year 3 months 18 days
Term extension \| Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Extended term	14 years 4 months 24 days	11 years 6 months
Term extension \| Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Extended term	1 year 4 months 24 days	1 year 4 months 24 days
Payment Deferral \| Commercial non-mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Extended term	6 months	6 months
Payment Deferral \| Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Extended term	3 months 18 days	3 months 18 days
Payment Deferral \| Equipment financing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Extended term	6 months	6 months
Payment Deferral \| Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Extended term	1 year	1 year
Extended Maturity and Interest Rate Reduction \| Commercial non-mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Extended term	3 years 8 months 12 days	3 years 8 months 12 days
Reduced weighted average interest rate	1.30%	1.30%
Extended Maturity and Interest Rate Reduction \| Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Extended term	16 years	12 years 8 months 12 days
Reduced weighted average interest rate	1.40%	1.40%
Extended Maturity And Payment Deferral \| Commercial non-mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Extended term	1 year	1 year
Reduced weighted average interest rate	130%	130%

Transfers and Servicing of Fi_3

Transfers and Servicing of Financial Assets (Loans sold) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage banking activities	$ 129	$ 102	$ 188	$ 530
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Origination fees	34	37	45	172
Mortgage banking activities	129	102	188	530
Consumer Portfolio Segment [Member] \| Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net gain on sale	91	106	168	503
Fair value adjustment	4	(41)	(25)	(145)
Proceeds from sale	4,828	6,080	8,660	32,833
Consumer Portfolio Segment [Member] \| Loans sold with servicing rights retained
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds from sale	$ 4,119	$ 4,954	$ 5,348	$ 30,317

Transfers and Servicing of Fi_4

Transfers and Servicing of Financial Assets (Narrative) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Proceeds from sale of loans not originated for sale			$ 441,129	$ 118,505
Mortgage banking activities	$ 129	$ 102	188	530
Residential
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Proceeds from sale of loans not originated for sale	334,400	67,400	441,100	118,500
Commercial
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Mortgage banking activities	600	1,400	700	3,200
Consumer Portfolio Segment [Member]
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Mortgage banking activities	129	102	188	530
Consumer Portfolio Segment [Member] \| Residential
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Retained servicing rights	1,900,000		1,900,000		$ 2,000,000
Loan servicing fees, net	$ 1,300	$ 500	$ 2,600	$ 1,600

Transfers and Servicing of Fi_5

Transfers and Servicing of Financial Assets (Servicing Assets at Amortized Cost Roll Forward) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Beginning Balance	$ 9,189	$ 9,735	$ 9,515	$ 9,237
Additions	37	56	52	265
Amortization	(368)	(1,199)	(709)	(1,769)
Ending Balance	8,858	8,592	8,858	8,592
Business Acquisition [Line Items]
Additions	37	56	52	265
Sterling
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Additions	0	0	0	859
Business Acquisition [Line Items]
Additions	$ 0	$ 0	$ 0	$ 859

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets (Schedule of Goodwill) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Goodwill [Roll Forward]
Balance, beginning of period	$ 2,514,104	$ 538,373
Balance, end of period	2,631,465	2,514,104
Sterling
Goodwill [Roll Forward]
Goodwill acquired	143,216	1,939,765
Bend
Goodwill [Roll Forward]
Goodwill acquired	25,561	35,966
interLINK
Goodwill [Roll Forward]
Goodwill acquired	$ 294	$ 0

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets (Gross Carrying Value And Accumulated Amortization Of Other Intangible Assets) (Detail) - USD ($) $ in Thousands	Jan. 11, 2023	Jun. 30, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		$ 301,037	$ 261,037
Accumulated Amortization		80,385	61,695
Net Carrying Amount		220,652	199,342
Core deposits
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		146,037	146,037
Accumulated Amortization		45,623	36,710
Net Carrying Amount		100,414	109,327
Customer relationships (1)
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		151,000	115,000
Accumulated Amortization		34,362	24,985
Net Carrying Amount		116,638	90,015
Customer relationships (1) \| interLINK
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, useful life	10 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets	$ 36,000
Noncompete Agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		4,000	0
Accumulated Amortization		400	0
Net Carrying Amount		$ 3,600	$ 0
Noncompete Agreements \| interLINK
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, useful life	5 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets	$ 4,000

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets (Schedule Of Expected Future Amortization Expense) (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Jan. 11, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2023	$ 17,517
2024	29,618
2025	25,956
2026	25,565
2027	25,565
Thereafter	$ 96,431
interLINK \| Noncompete Agreements
Goodwill and Intangible Assets Disclosure [Abstract]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets		$ 4,000
Finite-Lived Intangible Assets [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets		$ 4,000

Deposits (Summary Of Deposits)

Deposits (Summary Of Deposits) (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Non-interest-bearing:
Demand	$ 11,157,390	$ 12,974,975
Interest-bearing:
HSA	8,206,844	7,944,892
Checking	8,775,975	9,237,529
Money market	16,189,678	11,062,652
Savings	7,131,587	8,673,343
Time deposits	7,286,058	4,160,949
Total interest-bearing	47,590,142	41,079,365
Total deposits	58,747,532	54,054,340
Time deposits, money market, and interest-bearing checking obtained through brokers (1)	3,234,854	1,964,873
Aggregate amount of time deposit accounts that exceeded the FDIC limit	3,553,953	1,894,950
Demand deposit overdrafts reclassified as loan balances	9,312	$ 8,721
Money market sweep deposits	$ 4,300,000

Deposits (Scheduled Maturities

Deposits (Scheduled Maturities Of Time Deposits) (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Deposit Liabilities [Abstract]
Remainder of 2023	$ 4,189,693
2024	2,859,064
2025	134,973
2026	53,889
2027	35,600
Thereafter	12,839
Time deposits	$ 7,286,058	$ 4,160,949

Borrowings (Summary Of Securiti

Borrowings (Summary Of Securities Sold Under Agreements To Repurchase And Other Borrowings) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Securities sold under agreements to repurchase
Assets Sold under Agreements to Repurchase [Line Items]
Total Outstanding	$ 243,580	$ 282,005
Rate	0.11%	0.11%
Federal funds purchased
Assets Sold under Agreements to Repurchase [Line Items]
Total Outstanding	$ 0	$ 869,825
Rate	0%	4.44%
Securities sold under agreements to repurchase and other borrowings
Assets Sold under Agreements to Repurchase [Line Items]
Total Outstanding	$ 243,580	$ 1,151,830
Rate	0.11%	3.38%

Borrowings (Summary Of Advances

Borrowings (Summary Of Advances Payable To the Federal Home Loan Bank) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Federal Home Loan Bank, Advances, Maturity, Rolling Year [Abstract]
FHLB advances maturing within 1 year, Total Outstanding	$ 4,300,180	$ 5,450,187
FHLB advances maturing after 1 but within 2 years, Total Outstanding	0	0
FHLB advances maturing after 2 but within 3 years, Total Outstanding	0	0
FHLB advances maturing after 3 but within 4 years, Total Outstanding	0	0
FHLB advances maturing after 4 but within 5 years, Total Outstanding	478	252
FHLB advances maturing after 5 years, Total Outstanding	9,713	10,113
Total FHLB advances	$ 4,310,371	$ 5,460,552
Federal Home Loan Bank, Advances, Weighted Average Interest Rate [Abstract]
FHLB advances maturing within 1 year, Weighted Average Contractual Coupon Rate (as a percent)	5.26%	4.40%
FHLB advances maturing after 1 but within 2 years, Weighted Average Contractual Coupon Rate (as a percent)	0%	0%
FHLB advances maturing after 2 but within 3 years, Weighted Average Contractual Coupon Rate (as a percent)	0%	0%
FHLB advances maturing after 3 but within 4 years, Weighted Average Contractual Coupon Rate (as a percent)	0%	0%
FHLB advances maturing after 4 but within 5 years, Weighted Average Contractual Coupon Rate (as a percent)	1.35%	0%
FHLB advances maturing after 5 years, Weighted Average Contractual Coupon Rate (as a percent)	2.07%	2.09%
Federal Home Loan Bank, Advances, Weighted Average Contractual Coupon Rate (as a percent)	5.26%	4.39%
Aggregate carrying value of assets pledged as collateral	$ 21,308,244	$ 13,692,379
Remaining borrowing capacity at FHLB	$ 11,559,717	$ 4,291,326

Borrowings (Long Term Debt) (De

Borrowings (Long Term Debt) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Debt Instrument [Line Items]
Notes and subordinated debt	$ 1,039,651	$ 1,039,651		$ 1,059,778
Debt issuance cost on senior fixed-rates	(1,612)	(1,612)		(1,824)
Long-term debt	$ 1,052,258	1,052,258		$ 1,073,128
Proceeds from extinguishment of borrowings		$ 698	$ 0
Variable interest rate	8.46%	8.46%		7.69%
LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	2.95%	2.95%
Senior Notes
Debt Instrument [Line Items]
Discount on senior fixed-rate notes	$ (647)	$ (647)		$ (756)
Senior Notes \| Senior Notes Due 2024
Debt Instrument [Line Items]
Senior notes, interest rate (as a percent)	4.375%	4.375%
Notes and subordinated debt	$ 132,550	$ 132,550		150,000
Shares repurchased and retired	$ 17,500
Price of senior notes (in dollars per share)	$ 0.96
Proceeds from extinguishment of borrowings	$ 700
Senior Notes \| Senior Notes Due 2029
Debt Instrument [Line Items]
Senior notes, interest rate (as a percent)	4.10%	4.10%
Notes and subordinated debt	$ 330,781	$ 330,781		333,458
Hedge basis adjustment	30,800	30,800		33,500
Subordinated Debt
Debt Instrument [Line Items]
Premium on subordinated fixed-to-floating rate notes	$ 14,866	$ 14,866		15,930
Subordinated Debt \| Subordinated Notes Due 2029
Debt Instrument [Line Items]
Senior notes, interest rate (as a percent)	4%	4%
Notes and subordinated debt	$ 274,000	$ 274,000		274,000
Subordinated Debt \| Subordinated Notes Due 2030
Debt Instrument [Line Items]
Senior notes, interest rate (as a percent)	3.875%	3.875%
Notes and subordinated debt	$ 225,000	$ 225,000		225,000
Junior subordinated debt
Debt Instrument [Line Items]
Notes and subordinated debt	77,320	77,320		77,320
Long-term Debt
Debt Instrument [Line Items]
Hedge basis adjustment	$ 30,781	$ 30,781		$ 33,458

Borrowings (Narrative) (Details

Borrowings (Narrative) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	Jan. 31, 2022
Assets Sold under Agreements to Repurchase [Line Items]
Notes and subordinated debt	$ 1,039,651	$ 1,059,778
Sterling
Assets Sold under Agreements to Repurchase [Line Items]
Long-term debt			$ 516,881
Subordinated Notes Due 2029 \| Subordinated Debt
Assets Sold under Agreements to Repurchase [Line Items]
Notes and subordinated debt	$ 274,000	274,000
Senior notes, interest rate (as a percent)	4%
Subordinated Notes Due 2030 \| Subordinated Debt
Assets Sold under Agreements to Repurchase [Line Items]
Notes and subordinated debt	$ 225,000	$ 225,000
Senior notes, interest rate (as a percent)	3.875%

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive (Loss) Income, Net of Tax (Schedule of Other Comprehensive Income (Loss)) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 8,294,294	$ 8,177,135	$ 8,056,186	$ 3,438,325
Other comprehensive (loss) income before reclassifications	(133,195)	(206,671)	(52,225)	(460,882)
Amounts reclassified from accumulated other comprehensive (loss) income	2,392	1,062	18,362	2,130
Other comprehensive (loss) income, net of tax	(130,803)	(205,609)	(33,863)	(458,752)
Ending Balance	8,279,726	7,997,788	8,279,726	7,997,788
Available For Sale and Transferred Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(559,542)	(240,343)	(631,160)	4,536
Other comprehensive (loss) income before reclassifications	(85,072)	(205,273)	(28,437)	(450,152)
Amounts reclassified from accumulated other comprehensive (loss) income	35	0	15,018	0
Other comprehensive (loss) income, net of tax	(85,037)		(13,419)
Ending Balance	(644,579)	(445,616)	(644,579)	(445,616)
Derivative Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	12,500	(1,774)	(8,874)	6,070
Other comprehensive (loss) income before reclassifications	(48,123)	(1,070)	(27,341)	(9,683)
Amounts reclassified from accumulated other comprehensive (loss) income	600	762	1,192	1,531
Other comprehensive (loss) income, net of tax	(47,523)	(308)	(26,149)	(8,152)
Ending Balance	(35,023)	(2,082)	(35,023)	(2,082)
Defined Benefit Pension and Other Postretirement Benefit Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(40,978)	(33,606)	(44,926)	(33,186)
Other comprehensive (loss) income before reclassifications	0	(328)	3,553	(1,047)
Amounts reclassified from accumulated other comprehensive (loss) income	1,757	300	2,152	599
Other comprehensive (loss) income, net of tax	1,757	(28)	5,705	(448)
Ending Balance	(39,221)	(33,634)	(39,221)	(33,634)
Accumulated Other Comprehensive Income (Loss), Net of Tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(588,020)	(275,723)	(684,960)	(22,580)
Other comprehensive (loss) income, net of tax	(130,803)	(205,609)	(33,863)	(458,752)
Ending Balance	$ (718,823)	$ (481,332)	$ (718,823)	$ (481,332)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive (Loss) Income, Net of Tax (Schedule of Accumulated Other Comprehensive Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense	$ (62,648)	$ (54,812)	$ (128,477)	$ (21,212)
Net of tax	(2,392)	(1,062)	(18,362)	(2,130)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	(600)	(762)	(1,192)	(1,531)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges \| Reclassification out of accumualted comprehensive income
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense	223	283	443	569
Net of tax	(600)	(762)	(1,192)	(1,531)
Hedge terminations	(99)	(76)	(175)	(153)
Premium amortization	(724)	(969)	(1,460)	(1,947)
Accumulated Defined Benefit Plans Adjustment, Net Unamortized Gain (Loss)
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Actuarial net loss amortization	(2,410)	(411)	(2,952)	(822)
Defined benefit pension and postretirement benefit plans
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	(1,757)	(300)	(2,152)	(599)
Income tax expense	653	111	800	223
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense	13		5,513	0
Net of tax	(35)	0	(15,018)	0
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent \| Reclassification out of accumualted comprehensive income
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net holding (losses)	$ (48)	0	$ (20,531)	$ 0
Income tax expense		$ 0

Regulatory Capital and Restri_3

Regulatory Capital and Restrictions (Information On The Capital Ratios) (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 risk-based capital, Actual Amount	$ 5,923,265		$ 5,923,265		$ 5,822,369
CET1 risk-based capital, Actual Ratio	0.1065		0.1065		0.1071
CET1 risk-based capital, Minimum Requirement Amount	$ 2,502,484		$ 2,502,484		$ 2,446,344
CET1 risk-based capital, Well Capitalized Amount	3,614,699		3,614,699		3,533,608
Total risk-based capital, Actual Amount	$ 7,368,290		$ 7,368,290		$ 7,203,029
Total risk-based capital, Actual Ratio	0.1325		0.1325		0.1325
Total risk-based capital, Capital Requirements, Minimum Amount	$ 4,448,860		$ 4,448,860		$ 4,349,056
Total risk-based capital, Capital Requirements, Minimum Ratio	0.080		0.080		0.080
Total risk-based capital, Capital Requirements, Well Capitalized Amount	$ 5,561,075		$ 5,561,075		$ 5,436,320
Total risk-based capital, Capital Requirements, Well Capitalized Ratio	0.100		0.100		0.100
Tier 1 capital, Actual Amount	$ 6,207,244		$ 6,207,244		$ 6,106,348
Tier 1 capital, Actual Ratio	0.1116		0.1116		0.1123
Tier 1 capital, Capital Requirements, Minimum Amount	$ 3,336,645		$ 3,336,645		$ 3,261,792
Tier 1 capital, Capital Requirements, Minimum Ratio	0.060		0.060		0.060
Tier 1 capital, Capital Requirements, Well Capitalized Amount	$ 4,448,860		$ 4,448,860		$ 4,349,056
Tier 1 capital, Capital Requirements, Well Capitalized Ratio	0.080		0.080		0.080
Tier 1 leverage capital ratio, Actual Amount	$ 6,207,244		$ 6,207,244		$ 6,106,348
Tier 1 leverage capital ratio, Actual Ratio	0.0836		0.0836		0.0895
Tier 1 leverage capital ratio, Capital Requirements, Minimum Amount	$ 2,969,294		$ 2,969,294		$ 2,730,212
Tier 1 leverage capital ratio, Capital Requirements, Minimum Ratio	0.040		0.040		0.040
Tier 1 leverage capital ratio, Capital Requirements, Well Capitalized Amount	$ 3,711,617		$ 3,711,617		$ 3,412,765
Tier 1 leverage capital ratio, Capital Requirements, Well Capitalized Ratio	0.050		0.050		0.050
Dividends paid	$ 100,000	$ 125,000	$ 250,000	$ 125,000
Subsidiaries
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 risk-based capital, Actual Amount	$ 6,780,817		$ 6,780,817		$ 6,661,504
CET1 risk-based capital, Actual Ratio	0.1221		0.1221		0.1228
CET1 risk-based capital, Minimum Requirement Amount	$ 2,498,477		$ 2,498,477		$ 2,442,058
CET1 risk-based capital, Well Capitalized Amount	3,608,911		3,608,911		3,527,417
Total risk-based capital, Actual Amount	$ 7,350,677		$ 7,350,677		$ 7,165,935
Total risk-based capital, Actual Ratio	0.1324		0.1324		0.1320
Total risk-based capital, Capital Requirements, Minimum Amount	$ 4,441,736		$ 4,441,736		$ 4,341,437
Total risk-based capital, Capital Requirements, Minimum Ratio	0.080		0.080		0.080
Total risk-based capital, Capital Requirements, Well Capitalized Amount	$ 5,552,170		$ 5,552,170		$ 5,426,796
Total risk-based capital, Capital Requirements, Well Capitalized Ratio	0.100		0.100		0.100
Tier 1 capital, Actual Amount	$ 6,780,817		$ 6,780,817		$ 6,661,504
Tier 1 capital, Actual Ratio	0.1221		0.1221		0.1228
Tier 1 capital, Capital Requirements, Minimum Amount	$ 3,331,302		$ 3,331,302		$ 3,256,078
Tier 1 capital, Capital Requirements, Minimum Ratio	0.060		0.060		0.060
Tier 1 capital, Capital Requirements, Well Capitalized Amount	$ 4,441,736		$ 4,441,736		$ 4,341,437
Tier 1 capital, Capital Requirements, Well Capitalized Ratio	0.080		0.080		0.080
Tier 1 leverage capital ratio, Actual Amount	$ 6,780,817		$ 6,780,817		$ 6,661,504
Tier 1 leverage capital ratio, Actual Ratio	0.0914		0.0914		0.0977
Tier 1 leverage capital ratio, Capital Requirements, Minimum Amount	$ 2,967,209		$ 2,967,209		$ 2,727,476
Tier 1 leverage capital ratio, Capital Requirements, Minimum Ratio	0.040		0.040		0.040
Tier 1 leverage capital ratio, Capital Requirements, Well Capitalized Amount	$ 3,709,012		$ 3,709,012		$ 3,409,345
Tier 1 leverage capital ratio, Capital Requirements, Well Capitalized Ratio	0.050		0.050		0.050
Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 risk-based capital, Actual Ratio	0.045		0.045		0.045
Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets \| Subsidiaries
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 risk-based capital, Actual Ratio	0.045		0.045		0.045
Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 risk-based capital, Actual Ratio	0.065		0.065		0.065
Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets \| Subsidiaries
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 risk-based capital, Actual Ratio	0.065		0.065		0.065

Variable Interest Entities - Su

Variable Interest Entities - Summary of LIHTC Investments and Commitments (Details) - Variable Interest Entity, Not Primary Beneficiary - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Variable Interest Entity [Line Items]
Gross investment in LIHTC	$ 868,459		$ 797,453
Accumulated amortization	(105,719)		(69,424)
Net investment in LIHTC investments	762,740		728,029
Unfunded commitments for LIHTC investments	366,869		$ 335,959
Liabilities assumed	$ 68,200	$ 76,700

Variable Interest Entities - Na

Variable Interest Entities - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Variable Interest Entity [Line Items]
Assets	$ 74,038,243		$ 71,277,521
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Liabilities assumed	68,200	$ 76,700
Other Investments \| Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Assets	170,100		144,900
Unfunded Loan Commitment \| Other Non-Marketable Investments \| Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Maximum exposure to loss	$ 293,900		$ 243,900

Earnings Per Common Share (Earn

Earnings Per Common Share (Earnings Per Share Basic And Diluted) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share Reconciliation [Abstract]
Net income	$ 234,968	$ 182,311	$ 455,972	$ 165,564
Less: Preferred stock dividends	4,162	4,163	8,325	7,594
Earnings applicable to common stockholders	230,806	178,148	447,647	157,970
Net income available to common stockholders	230,806	178,148	447,647	157,970
Less: (Loss) earnings allocated to participating securities, basic	2,235	1,718	4,073	1,456
Less: (Loss) earnings allocated to participating securities, diluted	2,235	1,718	4,073	1,456
Earnings applicable to common stockholders	228,571	176,430	443,574	156,514
Earnings applicable to common stockholders	$ 228,571	$ 176,430	$ 443,574	$ 156,514
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted-average common shares outstanding - basic (in shares)	172,739	175,845	172,752	161,698
Effect of dilutive securities (in shares)	64	50	87	87
Weighted-average common shares outstanding - diluted (in shares)	172,803	175,895	172,839	161,785
Earnings Per Share, Basic and Diluted [Abstract]
Basic (loss) earnings per common share (in dollars per share)	$ 1.32	$ 1	$ 2.57	$ 0.97
Diluted (loss) earnings per common share (in shares)	$ 1.32	$ 1	$ 2.57	$ 0.97

Earnings Per Common Share (Narr

Earnings Per Common Share (Narrative) (Details) - shares	3 Months Ended		6 Months Ended
Earnings Per Common Share (Narrative) (Details) - shares	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Restricted stock (due to performance conditions on non-participating shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities	263,674	379,308	174,840	298,617

Derivative Financial Instrume_3

Derivative Financial Instruments (Schedule fair value of derivative instruments) (Detail) - USD ($)	Jun. 30, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts	$ 8,554,093,000	$ 8,539,724,000
Asset Derivatives, Fair Value, before netting	375,961,000	222,906,000
Asset Derivatives, Fair Value, Less: Master netting agreements	52,273,000	16,129,000
Asset Derivatives, Fair Value, Less: Cash collateral posted	311,774,000	184,095,000
Total derivative instruments, after netting	11,914,000	22,682,000
Liability Derivatives, Notional Amount	12,762,905,000	9,379,322,000
Liability Derivatives, Fair Value	433,696,000	414,499,000
Liability Derivatives, Fair Value, Less: Master netting agreements	52,273,000	16,129,000
Liability Derivatives, Fair Value, Less: Cash collateral posted	0	0
Total derivative instruments, after netting	381,423,000	398,370,000
CME
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value, Less: Cash collateral posted	4,600,000
Total derivative instruments, after netting	0
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	370,140,000	217,246,000
Asset Derivatives, Fair Value, Less: Master netting agreements	52,273,000	16,129,000
Total derivative instruments, after netting	311,774,000	184,095,000
Liability Derivatives, Fair Value	52,273,000	16,129,000
Liability Derivatives, Fair Value, Less: Master netting agreements	52,273,000	16,129,000
Total derivative instruments, after netting	0	0
Designated as Hedging Instrument \| Interest rate derivatives
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts	1,000,000,000	1,350,000,000
Asset Derivatives, Fair Value	453,000	1,515,000
Liability Derivatives, Notional Amount	4,750,000,000	1,750,000,000
Liability Derivatives, Fair Value	46,087,000	9,632,000
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts	7,554,093,000	7,189,724,000
Asset Derivatives, Fair Value, Total	375,508,000	221,391,000
Liability Derivatives, Notional Amount	8,012,905,000	7,629,322,000
Liability Derivatives, Fair Value, Positions not subject to master netting agreement	387,609,000	404,867,000
Not Designated as Hedging Instrument \| Interest rate derivatives
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts	7,322,980,000	7,024,507,000
Asset Derivatives, Fair Value	375,350,000	221,225,000
Liability Derivatives, Notional Amount	7,329,236,000	7,022,844,000
Liability Derivatives, Fair Value	387,261,000	403,952,000
Not Designated as Hedging Instrument \| Mortgage Banking Derivatives \| RPA-Out
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts	798,000	3,283,000
Asset Derivatives, Fair Value	5,000	32,000
Not Designated as Hedging Instrument \| Mortgage Banking Derivatives \| RPA-In
Derivatives, Fair Value [Line Items]
Liability Derivatives, Notional Amount	0	0
Liability Derivatives, Fair Value	0	0
Not Designated as Hedging Instrument \| Other
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts	230,315,000	161,934,000
Asset Derivatives, Fair Value	153,000	134,000
Liability Derivatives, Notional Amount	683,669,000	606,478,000
Liability Derivatives, Fair Value	348,000	915,000
Not Designated as Hedging Instrument \| Interest Rate Swap, CME
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts	600,000,000	2,700,000,000
Liability Derivatives, Notional Amount	100,000,000	0
Not Designated as Hedging Instrument \| Credit Risk Contract \| RPA-Out
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional Amounts	201,700,000	125,600,000
Not Designated as Hedging Instrument \| Credit Risk Contract \| RPA-In
Derivatives, Fair Value [Line Items]
Liability Derivatives, Notional Amount	648,200,000	559,200,000
Interest Rate Lock Commitments
Derivatives, Fair Value [Line Items]
Other commitment	$ 4,100,000	$ 2,400,000

Derivative Financial Instrume_4

Derivative Financial Instruments (Offsetting Derivatives) (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Derivative [Line Items]
Asset Derivatives, Fair Value, Less: Master netting agreements	$ 52,273	$ 16,129
Asset derivatives	11,914	22,682
Liability Derivatives, Fair Value, Less: Master netting agreements	52,273	16,129
Liability derivatives	381,423	398,370
Hedge Accounting Positions
Derivative [Line Items]
Asset Derivatives, Fair Value	370,140	217,246
Asset Derivatives, Fair Value, Less: Master netting agreements	52,273	16,129
Asset derivatives	311,774	184,095
Asset derivatives, amounts not offset	6,093	17,022
Asset derivatives, net amounts	6,112	17,392
Liability Derivatives, Fair Value	52,273	16,129
Liability Derivatives, Fair Value, Less: Master netting agreements	52,273	16,129
Liability derivatives	0	0
Liability derivatives, amounts not offset	0	0
Liability derivatives, net amounts	$ 3,386	$ 1,545

Derivative Financial Instrume_5

Derivative Financial Instruments (Income Statement Effect) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss)	$ (1,127)	$ 13,812		$ 20,605
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss)			$ (5,565)
Interest Rate Derivatives \| Operating Expense \| Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss)	(194)	12,814	(3,881)	19,259
Mortgage Banking Derivatives \| Operating Expense \| Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss)	(12)	(29)	(28)	(78)
Other \| Operating Expense \| Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss)	(921)	1,027	(1,656)	1,424
Cash Flow Hedging \| Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss)	(823)	1,167	(1,635)	3,650
Cash Flow Hedging \| Interest Rate Derivatives \| Operating Expense \| Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss)	99	77	175	153
Cash Flow Hedging \| Interest Rate Derivatives \| Other Income \| Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss)	(724)	1,244	(1,460)	3,803
Fair Value Hedging [Member] \| Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss)	(776)	0	(968)	0
Fair Value Hedging [Member] \| Operating Expense \| Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss)	(10,152)	0	275	0
Fair Value Hedging [Member] \| Operating Expense \| Designated as Hedging Instrument \| Long-term Debt
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss)	$ 10,928	$ 0	$ 693	$ 0

Derivative Financial Instrume_6

Derivative Financial Instruments Impact of Fair Value Hedging Adjustment (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Long-term Debt
Derivative Instruments, Gain (Loss) [Line Items]
Hedge basis adjustment	$ 30,781	$ 33,458
Hedged Liability, Fair Value Hedge	330,781	333,458
Deposits
Derivative Instruments, Gain (Loss) [Line Items]
Hedge basis adjustment	275	0
Hedged Liability, Fair Value Hedge	$ 400,275	$ 0

Derivative Financial Instrume_7

Derivative Financial Instruments (AOCI Related to Cash Flow Hedges) (Narrative) (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Unamortized balance	$ 1.4
Maximum length of time over which forecasted transactions are hedged	4 years 8 months 12 days
Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Estimate of amount to be reclassified from AOCL	$ 0.2
Remaining unamortized gain (loss) on termination of cash flow hedges	(0.2)
Cash Flow Hedging \| Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Estimate of amount to be reclassified from AOCL	$ 34.4

Derivative Financial Instrume_8

Derivative Financial Instruments (Counterparty Credit Risk Narrative) (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Derivative [Line Items]
Derivative instrument asset, Amount Offset	$ 311,774	$ 184,095
Maximum exposure	5,800
Debit (credit) valuation adjustment	6,600	$ 8,400
Cash and Due from Banks
Derivative [Line Items]
Derivative, Collateral, Right to Reclaim Cash	315,200
Valuation, Market Approach
Derivative [Line Items]
Maximum exposure	101,800
CME
Derivative [Line Items]
Derivative instrument asset, Amount Offset	$ 4,600

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Detail) - USD ($)	3 Months Ended	6 Months Ended
Fair Value Measurements (Narrative) (Detail) - USD ($)	Jun. 30, 2023	Jun. 30, 2023	Jan. 11, 2023	Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Remaining unfunded commitment				$ 1,724,000
Broker dealer deposit program, fair value	$ 2,500,000,000	$ 2,500,000,000
Unused commitments to extend credit	11,186,942,000	11,186,942,000		11,671,663,000
Loans transferred to held for sale, fair value	9,200,000	9,200,000		0
Loans in process of foreclosure	21,500,000	21,500,000
Value under fair value options	1,800,000	1,800,000		1,991,000
Write-ups due to observable price changes	300,000	300,000
Write-downs due to impairment	0	0
interLINK
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Contingent consideration			$ 16,000,000
Fair Value, Nonrecurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	3,300,000	3,300,000		2,300,000
Rabbi Trust
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	10,200,000	10,200,000		10,000,000
Alternative investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	27,000,000	27,000,000		82,700,000
Carrying amount of alternative investments	600,000	600,000		400,000
Remaining unfunded commitment	0	0
Write-down	100,000	200,000
Alternative investments carrying amount	28,500,000	28,500,000		89,200,000
Alternative investments \| Fair Value, Nonrecurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unused commitments to extend credit	48,400,000	48,400,000		42,800,000
Unused commitments to extend credit, fair value	$ 1,900,000	$ 1,900,000		$ 5,900,000

Fair Value Measurements (Fair V

Fair Value Measurements (Fair Value Option, Disclosures) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Option, Quantitative Disclosures [Line Items]
Originated loans held for sale, fair value	$ 1,800	$ 1,991
Originated loans held for sale, unpaid principal balance	10,963	1,991
Originated loans held for sale, difference	478	360
loans held for sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Originated loans held for sale, unpaid principal balance	$ 1,322	$ 1,631

Fair Value Measurements (Fair_2

Fair Value Measurements (Fair Value Unobservable Inputs) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($) holding
Re-sign Broker Dealers
Fair Value, Option, Quantitative Disclosures [Line Items]
Contingent consideration \| $	$ 4,798
Re-sign Broker Dealers \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Contingent consideration \| $	4,826
Deposit Program Growth
Fair Value, Option, Quantitative Disclosures [Line Items]
Contingent consideration \| $	11,241
Deposit Program Growth \| Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Contingent consideration \| $	$ 12,500
Probability of Achievement \| Re-sign Broker Dealers
Fair Value, Option, Quantitative Disclosures [Line Items]
Contingent Consideration, Measurement Input \| holding	0.990
Probability of Achievement \| Deposit Program Growth
Fair Value, Option, Quantitative Disclosures [Line Items]
Contingent Consideration, Measurement Input \| holding	1
Payment Term (in years) \| Re-sign Broker Dealers
Fair Value, Option, Quantitative Disclosures [Line Items]
Payment Term (in years)	2 months 19 days
Payment Term (in years) \| Deposit Program Growth
Fair Value, Option, Quantitative Disclosures [Line Items]
Payment Term (in years)	1 year 11 months 19 days
Discount Rate \| Re-sign Broker Dealers
Fair Value, Option, Quantitative Disclosures [Line Items]
Contingent Consideration, Measurement Input \| holding	0.0550
Discount Rate \| Deposit Program Growth
Fair Value, Option, Quantitative Disclosures [Line Items]
Contingent Consideration, Measurement Input \| holding	0.0550

Fair Value Measurements (Fair_3

Fair Value Measurements (Fair Value Assets And Liabilities Measured On Recurring and Nonrecurring Basis) (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Financial Assets:
Total available-for-sale securities	$ 7,759,341	$ 7,892,697
Asset derivatives	11,914	22,682
Value under fair value options	1,800	1,991
Financial Liabilities:
Liability derivatives	381,423	398,370
U.S. Treasury notes
Financial Assets:
Total available-for-sale securities	384,067	717,040
Government agency debentures
Financial Assets:
Total available-for-sale securities	261,101	258,374
Municipal bonds and notes
Financial Assets:
Total available-for-sale securities	1,604,150	1,633,202
Agency CMO
Financial Assets:
Total available-for-sale securities	53,360	59,965
Agency MBS
Financial Assets:
Total available-for-sale securities	2,184,907	2,158,024
Agency CMBS
Financial Assets:
Total available-for-sale securities	1,734,922	1,406,486
Non-agency CMBS
Financial Assets:
Total available-for-sale securities	876,119	896,640
CLO
Financial Assets:
Total available-for-sale securities		2,107
Corporate debt securities
Financial Assets:
Total available-for-sale securities	608,759	704,412
Private label MBS
Financial Assets:
Total available-for-sale securities	43,050	44,249
Other
Financial Assets:
Total available-for-sale securities	8,906	12,198
Fair Value, Recurring
Financial Assets:
Total available-for-sale securities	7,759,341	7,892,697
Alternative investments	29,023	89,678
Total financial assets	8,178,472	8,219,375
Financial Liabilities:
Liability derivatives	433,696	414,499
Contingent consideration	16,039
Liabilities, Fair Value Disclosure	449,735
Fair Value, Recurring \| Level 1
Financial Assets:
Total available-for-sale securities	384,067	717,040
Alternative investments	567	430
Total financial assets	397,048	729,652
Financial Liabilities:
Liability derivatives	262	843
Contingent consideration	0
Liabilities, Fair Value Disclosure	262
Fair Value, Recurring \| Level 2
Financial Assets:
Total available-for-sale securities	7,375,274	7,175,657
Alternative investments	0	0
Total financial assets	7,752,968	7,400,475
Financial Liabilities:
Liability derivatives	433,434	413,656
Contingent consideration	0
Liabilities, Fair Value Disclosure	433,434
Fair Value, Recurring \| Level 3
Financial Assets:
Total available-for-sale securities	0	0
Alternative investments	0	0
Total financial assets	0	0
Financial Liabilities:
Liability derivatives	0	0
Contingent consideration	16,039
Liabilities, Fair Value Disclosure	16,039
Fair Value, Recurring \| Derivative instruments
Financial Assets:
Asset derivatives	375,961	222,906
Fair Value, Recurring \| Derivative instruments \| Level 1
Financial Assets:
Asset derivatives	67	79
Fair Value, Recurring \| Derivative instruments \| Level 2
Financial Assets:
Asset derivatives	375,894	222,827
Fair Value, Recurring \| Derivative instruments \| Level 3
Financial Assets:
Asset derivatives	0	0
Fair Value, Recurring \| Loan Origination Commitments
Financial Assets:
Value under fair value options	1,800	1,991
Fair Value, Recurring \| Loan Origination Commitments \| Level 1
Financial Assets:
Value under fair value options	0	0
Fair Value, Recurring \| Loan Origination Commitments \| Level 2
Financial Assets:
Value under fair value options	1,800	1,991
Fair Value, Recurring \| Loan Origination Commitments \| Level 3
Financial Assets:
Value under fair value options	0	0
Fair Value, Recurring \| Investments Held In Rabbi Trust
Financial Assets:
Other assets	12,347	12,103
Fair Value, Recurring \| Investments Held In Rabbi Trust \| Level 1
Financial Assets:
Other assets	12,347	12,103
Fair Value, Recurring \| Investments Held In Rabbi Trust \| Level 2
Financial Assets:
Other assets	0	0
Fair Value, Recurring \| Investments Held In Rabbi Trust \| Level 3
Financial Assets:
Other assets	0	0
Fair Value, Recurring \| U.S. Treasury notes
Financial Assets:
Total available-for-sale securities	384,067	717,040
Fair Value, Recurring \| U.S. Treasury notes \| Level 1
Financial Assets:
Total available-for-sale securities	384,067	717,040
Fair Value, Recurring \| U.S. Treasury notes \| Level 2
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| U.S. Treasury notes \| Level 3
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| Government agency debentures
Financial Assets:
Total available-for-sale securities	261,101	258,374
Fair Value, Recurring \| Government agency debentures \| Level 1
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| Government agency debentures \| Level 2
Financial Assets:
Total available-for-sale securities	261,101	258,374
Fair Value, Recurring \| Government agency debentures \| Level 3
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| Municipal bonds and notes
Financial Assets:
Total available-for-sale securities	1,604,150	1,633,202
Fair Value, Recurring \| Municipal bonds and notes \| Level 1
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| Municipal bonds and notes \| Level 2
Financial Assets:
Total available-for-sale securities	1,604,150	1,633,202
Fair Value, Recurring \| Municipal bonds and notes \| Level 3
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| Agency CMO
Financial Assets:
Total available-for-sale securities	53,360	59,965
Fair Value, Recurring \| Agency CMO \| Level 1
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| Agency CMO \| Level 2
Financial Assets:
Total available-for-sale securities	53,360	59,965
Fair Value, Recurring \| Agency CMO \| Level 3
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| Agency MBS
Financial Assets:
Total available-for-sale securities	2,184,907	2,158,024
Fair Value, Recurring \| Agency MBS \| Level 1
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| Agency MBS \| Level 2
Financial Assets:
Total available-for-sale securities	2,184,907	2,158,024
Fair Value, Recurring \| Agency MBS \| Level 3
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| Agency CMBS
Financial Assets:
Total available-for-sale securities	1,734,922	1,406,486
Fair Value, Recurring \| Agency CMBS \| Level 1
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| Agency CMBS \| Level 2
Financial Assets:
Total available-for-sale securities	1,734,922	1,406,486
Fair Value, Recurring \| Agency CMBS \| Level 3
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| Non-agency CMBS
Financial Assets:
Total available-for-sale securities	876,119	896,640
Fair Value, Recurring \| Non-agency CMBS \| Level 1
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| Non-agency CMBS \| Level 2
Financial Assets:
Total available-for-sale securities	876,119	896,640
Fair Value, Recurring \| Non-agency CMBS \| Level 3
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| CLO
Financial Assets:
Total available-for-sale securities		2,107
Fair Value, Recurring \| CLO \| Level 1
Financial Assets:
Total available-for-sale securities		0
Fair Value, Recurring \| CLO \| Level 2
Financial Assets:
Total available-for-sale securities		2,107
Fair Value, Recurring \| CLO \| Level 3
Financial Assets:
Total available-for-sale securities		0
Fair Value, Recurring \| Corporate debt securities
Financial Assets:
Total available-for-sale securities	608,759	704,412
Fair Value, Recurring \| Corporate debt securities \| Level 1
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| Corporate debt securities \| Level 2
Financial Assets:
Total available-for-sale securities	608,759	704,412
Fair Value, Recurring \| Corporate debt securities \| Level 3
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| Private label MBS
Financial Assets:
Total available-for-sale securities	43,050	44,249
Fair Value, Recurring \| Private label MBS \| Level 1
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| Private label MBS \| Level 2
Financial Assets:
Total available-for-sale securities	43,050	44,249
Fair Value, Recurring \| Private label MBS \| Level 3
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| Other
Financial Assets:
Total available-for-sale securities	8,906	12,198
Fair Value, Recurring \| Other \| Level 1
Financial Assets:
Total available-for-sale securities	0	0
Fair Value, Recurring \| Other \| Level 2
Financial Assets:
Total available-for-sale securities	8,906	12,198
Fair Value, Recurring \| Other \| Level 3
Financial Assets:
Total available-for-sale securities	$ 0	$ 0

Fair Value Measurements (Summar

Fair Value Measurements (Summary Of Estimated Fair Values Of Significant Financial Instruments) (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 6,066,682		$ 5,761,453
Mortgage servicing assets, Carrying Amount	8,858	$ 9,189	9,515	$ 8,592	$ 9,735	$ 9,237
Fair Value, Nonrecurring \| Reported Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	1,360,759		839,943
Held-to-maturity investment securities	6,943,784		6,564,697
Loans and leases, net	50,997,137		49,169,685
Securities sold under agreements to repurchase and other borrowings	243,580		1,151,830
FHLB advances	4,310,371		5,460,552
Long-term debt	1,052,258		1,073,128
Fair Value, Nonrecurring \| Reported Value Measurement \| Deposits Liabilities, other than time deposits
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Time deposits	51,461,474		49,893,391
Fair Value, Nonrecurring \| Reported Value Measurement \| Time Deposits
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Time deposits	7,286,058		4,160,949
Fair Value, Nonrecurring \| Reported Value Measurement \| Residential
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage servicing assets, Carrying Amount	8,858		9,515
Fair Value, Nonrecurring \| Estimate of Fair Value Measurement \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	1,360,759		839,943
Fair Value, Nonrecurring \| Estimate of Fair Value Measurement \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	6,066,682		5,761,453
Securities sold under agreements to repurchase and other borrowings	243,548		1,151,797
FHLB advances	4,310,259		5,459,218
Long-term debt	971,751		1,001,779
Fair Value, Nonrecurring \| Estimate of Fair Value Measurement \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans and leases, net	49,027,570		47,604,463
Fair Value, Nonrecurring \| Estimate of Fair Value Measurement \| Deposits Liabilities, other than time deposits \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Time deposits	51,461,474		49,893,391
Fair Value, Nonrecurring \| Estimate of Fair Value Measurement \| Time Deposits \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Time deposits	7,189,837		4,091,979
Fair Value, Nonrecurring \| Estimate of Fair Value Measurement \| Residential \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage servicing assets, Fair value	$ 25,520		$ 27,043

Retirement Benefit Plans (Detai

Retirement Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Retirement Benefit Plans (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Defined Benefit Plan Disclosure [Line Items]
Weighted-average expected long-term rate of return	5.50%		5.50%
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	2,211	1,380	4,422	2,757
Expected return on plan assets	(2,699)	(3,668)	(5,398)	(7,337)
Amortization of actuarial loss (gain)	1,216	423	2,432	845
Net periodic benefit cost (income)	728	(1,865)	1,456	(3,735)
SERP
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0
Interest cost	47	17	114	32
Expected return on plan assets	0	0	0	0
Amortization of actuarial loss (gain)	2	6	3	13
Net periodic benefit cost (income)	49	23	117	45
OPEB
Defined Benefit Plan Disclosure [Line Items]
Service cost	7	9	14	15
Interest cost	263	213	643	357
Expected return on plan assets	0	0	0	0
Amortization of actuarial loss (gain)	(677)	(19)	(1,352)	(37)
Net periodic benefit cost (income)	$ (407)	$ 203	$ (695)	$ 335

Segment Reporting (Narrative) (

Segment Reporting (Narrative) (Details) $ in Thousands	6 Months Ended
Segment Reporting (Narrative) (Details) $ in Thousands	Jun. 30, 2023 USD ($) Segment	Dec. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	Jan. 31, 2022 USD ($)	Jan. 01, 2022 USD ($)	Dec. 31, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| Segment	3
Deposits	$ 58,747,532	$ 54,054,340
Goodwill	$ 2,631,465	$ 2,514,104	$ 2,514,104			$ 538,373
Sterling
Segment Reporting Information [Line Items]
Goodwill				$ 1,914,204	$ 1,900,000
Commercial Banking \| Sterling
Segment Reporting Information [Line Items]
Goodwill				1,700,000
Consumer Banking \| Sterling
Segment Reporting Information [Line Items]
Goodwill				$ 200,000
HSA Bank \| Bend
Segment Reporting Information [Line Items]
Goodwill					$ 35,700

Segment Reporting (Operating Re

Segment Reporting (Operating Results and Total Assets Reportable Segments) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Goodwill	$ 2,631,465	$ 2,514,104	$ 2,631,465	$ 2,514,104	$ 2,514,104	$ 538,373
Assets	74,038,243		74,038,243		71,277,521
Net interest income	583,829	486,660	1,179,112	880,908
Non-interest income	89,374	120,933	160,140	224,968
Non-interest expense	344,089	358,227	676,556	718,012
Pre-tax, pre-provision net revenue	329,114	249,366	662,696	387,864
Provision for credit losses	31,498	12,243	78,247	201,088
Income before income taxes	297,616	237,123	584,449	186,776
Income tax expense	62,648	54,812	128,477	21,212
Net income	234,968	182,311	455,972	165,564
Operating Segments \| Commercial Banking
Segment Reporting Information [Line Items]
Goodwill	2,029,204		2,029,204		1,904,291
Assets	46,426,949		46,426,949		44,380,582
Net interest income	383,606	333,421	767,920	620,490
Non-interest income	32,255	49,430	67,652	88,173
Non-interest expense	110,582	102,720	219,091	191,960
Pre-tax, pre-provision net revenue	305,279	280,131	616,481	516,703
Provision for credit losses	34,480	22,782	70,517	204,713
Income before income taxes	270,799	257,349	545,964	311,990
Income tax expense	67,971	64,337	137,037	74,392
Net income	202,828	193,012	408,927	237,598
Operating Segments \| HSA Bank
Segment Reporting Information [Line Items]
Goodwill	57,485		57,485		57,779
Assets	120,295		120,295		122,729
Net interest income	75,421	49,558	147,151	94,135
Non-interest income	23,023	26,552	47,090	53,510
Non-interest expense	42,643	37,540	86,343	73,949
Pre-tax, pre-provision net revenue	55,801	38,570	107,898	73,696
Provision for credit losses	0	0	0	0
Income before income taxes	55,801	38,570	107,898	73,696
Income tax expense	15,066	10,337	29,132	19,751
Net income	40,735	28,233	78,766	53,945
Operating Segments \| Consumer Banking
Segment Reporting Information [Line Items]
Goodwill	544,776		544,776		552,034
Assets	10,725,344		10,725,344		10,625,334
Net interest income	204,455	179,287	415,038	315,964
Non-interest income	28,877	30,798	54,836	58,699
Non-interest expense	108,880	107,366	215,759	202,876
Pre-tax, pre-provision net revenue	124,452	102,719	254,115	171,787
Provision for credit losses	769	(11,053)	2,553	(3,917)
Income before income taxes	123,683	113,772	251,562	175,704
Income tax expense	32,652	29,581	66,412	45,634
Net income	91,031	84,191	185,150	130,070
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Goodwill	0		0		0
Assets	16,765,655		16,765,655		$ 16,148,876
Net interest income	(79,653)	(75,606)	(150,997)	(149,681)
Non-interest income	5,219	14,153	(9,438)	24,586
Non-interest expense	81,984	110,601	155,363	249,227
Pre-tax, pre-provision net revenue	(156,418)	(172,054)	(315,798)	(374,322)
Provision for credit losses	(3,751)	514	5,177	292
Income before income taxes	(152,667)	(172,568)	(320,975)	(374,614)
Income tax expense	(53,041)	(49,443)	(104,104)	(118,565)
Net income	$ (99,626)	$ (123,125)	$ (216,871)	$ (256,049)

Revenue from Contracts with C_3

Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 61,489	$ 70,594	$ 121,204	$ 135,725
Non-interest income	89,374	120,933	160,140	224,968
Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	45,418	51,385	90,854	99,212
Loan and lease related fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	4,323	6,077	8,750	10,575
Wealth and investment services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	7,391	11,244	13,978	21,841
Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	4,357	1,888	7,622	4,097
Non-interest income within the scope of other GAAP topics
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	27,885
Non-interest income		50,339	38,936	89,243
Operating Segments \| Commercial Banking
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	12,778	16,494	25,362	30,811
Non-interest income	32,255	49,430	67,652	88,173
Operating Segments \| Commercial Banking \| Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	5,582	7,647	10,972	14,332
Operating Segments \| Commercial Banking \| Loan and lease related fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	4,323	6,077	8,750	10,575
Operating Segments \| Commercial Banking \| Wealth and investment services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	2,873	2,770	5,640	5,904
Operating Segments \| Commercial Banking \| Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0	0	0
Operating Segments \| Commercial Banking \| Non-interest income within the scope of other GAAP topics
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	19,477
Non-interest income		32,936	42,290	57,362
Operating Segments \| HSA Bank
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	23,023	26,552	47,090	53,510
Non-interest income	23,023	26,552	47,090	53,510
Operating Segments \| HSA Bank \| Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	20,986	24,949	43,078	50,083
Operating Segments \| HSA Bank \| Loan and lease related fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0	0	0
Operating Segments \| HSA Bank \| Wealth and investment services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0	0	0
Operating Segments \| HSA Bank \| Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	2,037	1,603	4,012	3,427
Operating Segments \| HSA Bank \| Non-interest income within the scope of other GAAP topics
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Non-interest income		0	0	0
Operating Segments \| Consumer Banking
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	24,904	27,130	47,114	50,949
Non-interest income	28,877	30,798	54,836	58,699
Operating Segments \| Consumer Banking \| Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	19,181	18,366	37,205	34,329
Operating Segments \| Consumer Banking \| Loan and lease related fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0	0	0
Operating Segments \| Consumer Banking \| Wealth and investment services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	4,525	8,479	8,353	15,950
Operating Segments \| Consumer Banking \| Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,198	285	1,556	670
Operating Segments \| Consumer Banking \| Non-interest income within the scope of other GAAP topics
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	3,973
Non-interest income		3,668	7,722	7,750
Corporate, Non-Segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	784	418	1,638	455
Non-interest income	5,219	14,153	(9,438)	24,586
Corporate, Non-Segment \| Deposit service fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	(331)	423	(401)	468
Corporate, Non-Segment \| Loan and lease related fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0	0	0
Corporate, Non-Segment \| Wealth and investment services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	(7)	(5)	(15)	(13)
Corporate, Non-Segment \| Other non interest income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,122	0	2,054	0
Corporate, Non-Segment \| Non-interest income within the scope of other GAAP topics
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 4,435
Non-interest income		$ 13,735	$ (11,076)	$ 24,131

Commitments and Contingencies_2

Commitments and Contingencies (Outstanding Financial Instruments Contract Amounts Represent Credit Risk) (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Loss Contingencies [Line Items]
Unused commitments to extend credit	$ 11,186,942	$ 11,671,663
Standby letter of credit
Loss Contingencies [Line Items]
Unused commitments to extend credit	426,658	380,655
Commercial letter of credit
Loss Contingencies [Line Items]
Unused commitments to extend credit	54,196	53,512
Commitments to extend credit
Loss Contingencies [Line Items]
Unused commitments to extend credit	$ 10,706,088	$ 11,237,496

Commitments and Contingencies_3

Commitments and Contingencies (Reserve for Unfunded Commitments) (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Jun. 30, 2023	May 22, 2023	Dec. 31, 2022
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Proposed annual rate			0.125%
Forecast
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Estimated Special Assessment Charge	$ 44,000
SEC Schedule, 12-09, Allowance, Credit Loss
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount		$ 22,400		$ 27,700

Business Combinations and Asset

Business Combinations and Asset Acquisitions (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Schedule of Restructuring Reserve by Type of Cost [Line Items]
Accrued severance and other benefits	$ 26,944	$ 42,218	$ 26,944	$ 42,218	$ 29,736	$ 37,945	$ 49,860	$ 10,835
Strategic initiative charges	1,988	7,808	8,184	52,483
Payments for Restructuring	(4,545)	(15,029)	(11,538)	(16,795)
Adjustments	(235)	(421)	(7,647)	(4,305)
Employee Severance [Member]
Schedule of Restructuring Reserve by Type of Cost [Line Items]
Accrued severance and other benefits	3,169	24,514	3,169	24,514	5,961	7,583	32,156	10,835
Strategic initiative charges	1,988	7,808	8,184	34,779
Payments for Restructuring	(4,545)	(15,029)	(11,538)	(16,795)
Adjustments	(235)	(421)	(1,060)	(4,305)
Occupancy
Schedule of Restructuring Reserve by Type of Cost [Line Items]
Accrued severance and other benefits	23,775	17,704	23,775	17,704	$ 23,775	$ 30,362	$ 17,704	$ 0
Strategic initiative charges	0	0	0	17,704
Payments for Restructuring	0	0	0	0
Adjustments	$ 0	$ 0	$ (6,587)	$ 0